Malicious PDF — malware analysis report

Static analysis result for SHA-256 93069cd16d253b00…

MALICIOUS

PDF

90.0 KB Created: 2021-07-13 17:00:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: b0066b8d4d139ceaa782205f1ce947dc SHA-1: 4c3321bffc6e17287f09c5c37d1e212c148cb76e SHA-256: 93069cd16d253b002a5b77e4545ff46be2f20c12babad6d9884a525b941103c2
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links pointing to external websites, many of which are hosted on compromised WordPress sites or disposable domains, indicating a link farm designed to redirect users. The presence of the ClamAV detection 'Pdf.Phishing.Trojan-d2568dad23a94d95' and the ML classifier's high confidence score further support its malicious nature. While no scripts were explicitly extracted, the structure and URL patterns suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9948

Heuristics 6

  • 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.
  • 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://inwebjor.ru/uplcv?utm_term=trojan+horse+is+a+type+of PDF link annotation
    • http://www.putnamtaxi.net/wp-content/plugins/formcraft/file-upload/server/content/files/160b63c0a20c04---89105706339.pdfIn PDF document text
    • http://dichvugiayphep.biz/upload/ck/files/92707169691.pdfIn PDF document text
    • https://hkparkkonutlari.com/image/files/76550926975.pdfIn PDF document text
    • http://finsura-lifedirect.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160989d9269d8b---80982811926.pdfIn PDF document text
    • http://williamshudson.org/clients/3/35/35bf74ce48b5c120232fd40fb4fe3e45/File/rafivol.pdfIn PDF document text
    • http://habitat3.eu/userfiles/files/zujibopobileveta.pdfIn PDF document text
    • https://www.avenueroadadvertising.com/wp-content/plugins/formcraft/file-upload/server/content/files/16073e9dad88ad---zetafukunitove.pdfIn PDF document text
    • http://zabradli-znerezu.cz/userfiles/file/55904721480.pdfIn PDF document text
    • https://travels-ukraine.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608b9d120323a---degusevewutotivif.pdfIn PDF document text
    • https://xn--1--8kcai1ck2bs.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/3824fd42e5182a258b0d6c01fb29ebd8/bamamotobamitidaxokajat.pdfIn PDF document text
    • https://cashofferoregon.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d980eb076bd---demiv.pdfIn PDF document text
    • https://www.hediyevideo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c8b52ab7ca7---53989596780.pdfIn PDF document text
    • http://strahovka66.ru/userfiles/file/21131865769.pdfIn PDF document text
    • https://g3az.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607271d723970---76018095068.pdfIn PDF document text
    • http://global-gypsum.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607bc0d82f443---wufofinufimutawil.pdfIn PDF document text
    • https://himalayanthailand.com/image/upload/File/25904366045.pdfIn PDF document text
    • http://tasarimak.com/ckfinder/userfiles/files/neluvesapebetab.pdfIn PDF document text
    • https://daluxerealty.com/wp-content/plugins/super-forms/uploads/php/files/0l0efruh8ugucg46l1c8sbb766/19115369514.pdfIn PDF document text
    • https://home18.ru/wp-content/plugins/super-forms/uploads/php/files/e48cae4e08b087d1b4de3a522f66c6b4/72395434318.pdfIn PDF document text
    • http://macautemple.com/userfiles/file/95650724018.pdfIn PDF document text
    • http://duhochmis.com/files/uploaded/files/fitapukinilupiku.pdfIn PDF document text
    • https://pet-fashion.ro/mm/file/vuwodoxotigofiwupuvodalit.pdfIn PDF document text
    • https://k9-warrior.com/wp-content/plugins/super-forms/uploads/php/files/8ei4k7fpsc4f0mrfvk80lfekle/ribimezan.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fefa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEFA 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0001170c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1170C 16692 bytes
SHA-256: 36c16ad72ee83bbbe8cd64e089d4cb5bc8d0e78410b79fef4999b2e38ed3c617
font_02_sfnt_off00014276.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14276 10616 bytes
SHA-256: ed57df6fbaddcebc7efa3b618515018beae13e5526b566cc7db8ed67932b9e64

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