Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ad2459177f6b7e5…

MALICIOUS

PDF

82.6 KB Created: 2021-09-07 12:54:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-20
MD5: 701b8ff3678cdd32a158e35889474a83 SHA-1: 3e662037ebe2c3384158b3852ca7ee433bdb3a1b SHA-256: 9ad2459177f6b7e59e79761dd6f8f660e5f84e99157a5eb00e238ff45c698c19
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link

This PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing or trojan delivery mechanism. The document contains numerous embedded URLs, many pointing to compromised WordPress sites or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The 'SE_CALLBACK_LURE' heuristic further indicates a potential phishing or scam pretext.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9928

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://pixomot.ru/uplcv?utm_term=vw+amarok+accessories+pdf PDF link annotation
    • http://dkstores.gr/userfiles/file/zawakozoboguzo.pdfIn PDF document text
    • http://foodchemsino.com/d/files/vasivevixavumebusobog.pdfIn PDF document text
    • http://ontheedgeofnow.com/wp-content/plugins/formcraft/file-upload/server/content/files/160956c0d1a1d8---zemobijubisikure.pdfIn PDF document text
    • https://tomas-music.com/contents//files/tufifetoliwezanomesapesup.pdfIn PDF document text
    • http://master-br.ru/img/file/pepetetamajemanazawo.pdfIn PDF document text
    • https://baodinhsolar.com/wp-content/plugins/super-forms/uploads/php/files/77i3gg2td7ma3ntk1thpck4f0b/faxijuwemowogonemaxuxiju.pdfIn PDF document text
    • https://stefandes.com/wp-content/plugins/formcraft/file-upload/server/content/files/160afd1b772b36---20556303033.pdfIn PDF document text
    • http://edmo-cars.nl/images/file/30015000095.pdfIn PDF document text
    • https://wscnaturalhealings.com/wp-content/plugins/super-forms/uploads/php/files/f867939c75bca02f677cd5e3791d111f/94851786679.pdfIn PDF document text
    • https://securityguardsupply.org/php/uploads/file/mugurega.pdfIn PDF document text
    • https://adsbudget.net/userfiles/file/29275145729.pdfIn PDF document text
    • http://www.realisthotel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607cad35ef51d---wetuwuberadimogasuderi.pdfIn PDF document text
    • http://tuanayapim.com/rsm/files/vimirazonadot.pdfIn PDF document text
    • https://vico-real-estate.com/ckfinder/userfiles/files/sizopazozipiso.pdfIn PDF document text
    • https://rosemonttherapy.health/wp-content/plugins/super-forms/uploads/php/files/u97s17gtmbvph0pfnd03p920v0/60642190798.pdfIn PDF document text
    • http://www.hptindia.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607930130da5b---xavagolegugo.pdfIn PDF document text
    • https://bbpartner.cz/userfiles/file/bufuxatunonofufugede.pdfIn PDF document text
    • https://aquafilling.com/userfiles/file/niguvarokofob.pdfIn PDF document text
    • https://husvagnsexpo.se/wp-content/plugins/formcraft/file-upload/server/content/files/1611eff0d129ac---gorosituvopokesurosu.pdfIn PDF document text
    • https://israelonthehouse.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a11ebcd39b8---feniwojajajejovalu.pdfIn PDF document text
    • https://www.mnogotrop.com/ckfinder/userfiles/files/55619637725.pdfIn PDF document text
    • https://www.moxiclear.com.au/application/third_party/ckfinder/userfiles/files/7849636248.pdfIn PDF document text
    • http://sieuthicayxanh.vn/webroot/img/files/28335852437.pdfIn PDF document text
    • http://inlikeflintlogistics.com/wp-content/plugins/formcraft/file-upload/server/content/files/16105a493b7016---6573300028.pdfIn PDF document text
    • http://rs-entp.com/upload/file/95468490761.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c36a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC36A 18280 bytes
SHA-256: a54e35ae3718f2664bb73e7c374e5f6c514429741e3e0dbadb6385cbf509fde0
font_01_sfnt_off0000e037.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE037 10680 bytes
SHA-256: 475d7979acc4674210895af3da3a0eba8b054985126882e770ed129cbe3022bb
font_02_sfnt_off0000f8c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8C7 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_03_sfnt_off000110d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x110D9 16888 bytes
SHA-256: b4a366e0e921661712d1d843928a02db8cbf1f4326db573b4b5b4f385eb93fe3

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