Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a852a248a52f1ab…

MALICIOUS

PDF

41.7 KB Created: 2020-08-19 07:42:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9cc30873c069f4faaeea9be835c92015 SHA-1: b74993b24e179f2bcd60391d690bc62ff46352bd SHA-256: 9a852a248a52f1ab236d9b7ff31426db4ac9c517c4559bcd1ade22dff02789df
234 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a malicious redirector link pointing to 'https://ttraff.cc/pify?keyword=test+cross+genetics+worksheet'. Additionally, it features a large number of external PDF links, many hosted on cdn.shopify.com, suggesting a link farm or SEO poisoning tactic. The ML classifier strongly flagged this PDF as malicious. The presence of these elements indicates a likely phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://ttraff.cc/pify?keyword=test+cross+genetics+worksheet.
  • 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://ttraff.cc/pify?keyword=test+cross+genetics+worksheet In PDF document text
    • http://files.jessakid.com/uploads/1/3/1/4/131483955/dimosadizib.pdfIn PDF document text
    • http://mamasax.noexcusesbrandshop.com/uploads/1/3/0/7/130776257/vasubenuna.pdfIn PDF document text
    • http://files.barthenheierconstruction.com/uploads/1/3/1/4/131482975/8723964.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8330/8955/files/butazefexodeke.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0454/1788/9960/files/julikedozakamuroruxosono.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8935/3117/files/angular_7_format_input_date.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5706/7685/files/tuwemogodopobep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6535/2093/files/59336484488.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3905/5253/files/77647256708.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9476/0862/files/osrs_dragon_slayer_guide_f2p.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/6363/6131/files/refrigeration_and_air_conditioning_short_notes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3504/1693/files/jexenosi.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://scripts.sil.org/OFLIn PDF document text

Related samples 3

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000667a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x667A 4924 bytes
SHA-256: fb254d3c66b297d90ddd3b4379924f24cf65a15e6bf6f5a7cf62f11281484912
font_01_sfnt_off0000774d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x774D 10288 bytes
SHA-256: be2d7dc3f74fcb6a3fe974ed405300befa906645d17ec475d7a4b36dc857396c

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