Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1f0bd7140c20fdf…

MALICIOUS

PDF

75.8 KB Created: 2021-09-08 10:29:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 42e6621c36517411da2f6003f0c233e2 SHA-1: efedf0e8ccd2ca550449bc3adebbd88ddd8fd9d6 SHA-256: d1f0bd7140c20fdfd1320f4b54bbcfb921ac9abe066fe710d0a3a85cf80487ce
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to potentially compromised websites and a link farm heuristic, suggesting an attempt to redirect users to malicious content. The 'SE_CALLBACK_LURE' heuristic indicates the document is designed to trick users into calling a phone number, a common tactic in tech-support scams and callback phishing. While no scripts were directly extracted, the ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or trojan delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9963

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 http://www.farmaciapenil.es/userfiles/files/lukefozevoxadogebidopa.pdf In PDF document text
    • http://vtracauto.com/wp-content/plugins/formcraft/file-upload/server/content/files/160de25b2b2d10---vofulotixitenomev.pdfIn PDF document text
    • http://anhuifan.com/upload_fck/file/2021-4-29/20210429145014457830.pdfIn PDF document text
    • https://binhruamuinanobac.com/wp-content/plugins/super-forms/uploads/php/files/t9pdu6j7tl77m3dmf7hghl8u83/41880368220.pdfIn PDF document text
    • https://amartzon.store/wp-content/plugins/super-forms/uploads/php/files/a26cffae64c0656a185cedabe9bbe992/71901036144.pdfIn PDF document text
    • http://planbmedia.hu/files/dijudokerivuwavesidofafed.pdfIn PDF document text
    • http://ednak.com/wp-content/plugins/formcraft/file-upload/server/content/files/160dfd31b08494---78719377345.pdfIn PDF document text
    • https://ymy-tea.tw/upload/files/dutipex.pdfIn PDF document text
    • https://www.sevgiliyevideo.net/wp-content/plugins/formcraft/file-upload/server/content/files/1607925ff1d987---18329660071.pdfIn PDF document text
    • http://pnktools-th.org/ckfinder/userfiles/files/58643696215.pdfIn PDF document text
    • https://www.chauffeur-prive-nice.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160f71749b730f---kawalabit.pdfIn PDF document text
    • https://diphong.com/uploads/bupajelojolugopo.pdfIn PDF document text
    • https://amartzon.store/wp-content/plugins/super-forms/uploads/php/files/da0ff88adaaeff314529c26ae1910677/mobotajulofalebegaxubuto.pdfIn PDF document text
    • https://houstoncoinshow.org/FCKeditor/file/degofa.pdfIn PDF document text
    • http://zonwering-belgie.com/ckfinder/userfiles/files/3451236374.pdfIn PDF document text
    • http://dynamic1984.com/user_file/file/kanikomisanivarasegi.pdfIn PDF document text
    • https://centrosteadycam.it/wp-content/plugins/super-forms/uploads/php/files/4ead49778d85a5ecc368ca23ce1288b9/resodapa.pdfIn PDF document text
    • https://ecableapp.com/FCKeditor/FCKimgUpload/file/77314059228.pdfIn PDF document text
    • http://clinivetmadonnadirosa.eu/userfiles/files/55801799163.pdfIn PDF document text
    • http://evevoyance.fr/adh/.-/file/87401599132.pdfIn PDF document text
    • https://thailonghoang.vn/upload/files/48905338889.pdfIn PDF document text
    • http://studiomilano.eu/userfiles/files/ravibizigebukemedoxej.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/DOqCt-cVA4I/uplcv?utm_term=craftsman+t1600+parts+manualPDF link annotation
    • 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c20c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC20C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000da1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA1E 18228 bytes
SHA-256: c7fcfd0bcf3960bf3e74964f54624a5d905936bd5b5fb82fea66be31891199ef
font_02_sfnt_off00010981.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10981 10648 bytes
SHA-256: 8ac3825068499f1ea3bb4441594adf8c4954713c94d92f49e2634df323f0b9d7

Open this report in the interactive analyzer, or submit your own file for analysis.