Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f71ad53329001d3…

MALICIOUS

PDF

42.8 KB Created: 2020-08-07 08:41:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 05c08bd55049ec1a6bd986ef10ef4613 SHA-1: a803edad4d64562181cac3ddd22ccff747d5575c SHA-256: 9f71ad53329001d38c146fd188c2f5c0bdfe7dcec37d533f27eea0ec34c35f5a
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to ttraff.com. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, many of which are hosted on Shopify. The ML classifier strongly flagged this PDF as malicious. The embedded URLs suggest a lure to download further malicious content or redirect to phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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.com/pify?keyword=t%25C5%2582umaczenie+zda%25C5%2584+angielski+gimnazjum+pdf In PDF document text
    • http://zofetat.davidwaltersministry.com/uploads/1/3/2/7/132710712/lijujaju.pdfIn PDF document text
    • http://files.paulsonisles.com/uploads/1/3/1/3/131380733/ziloziguwavupik-dakefetiganeso-nomamugugina-mebamud.pdfIn PDF document text
    • http://files.thorneaircon.com/uploads/1/3/1/6/131637546/jujokeb.pdfIn PDF document text
    • http://files.swfchinese.org/uploads/1/3/1/6/131637125/punoj.pdfIn PDF document text
    • http://files.dupageanimalfriends.org/uploads/1/3/1/4/131406391/7521643.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/1/0430/4519/1841/files/bajumagememirimuwojiluku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8722/3198/files/faronopemeximabikimemijo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9506/4730/files/fmea_aiag_vda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7361/0663/files/soluxazi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7354/5116/files/adventist_28_fundamental_beliefs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5283/4711/files/52343674379.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9578/5629/files/ponedibobawejaxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6150/0309/files/72787337576.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1329/9620/files/janosoxezetakumozo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8965/5960/files/zamadosatipowiviza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/2955/7411/files/celtic_alleluia_sending_forth.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 6

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_off0000646a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x646A 5704 bytes
SHA-256: 7f3ee473a3c2b7c98e18845b8e6b4c151c921fa98cef96a494e034163dad6821
font_01_sfnt_off0000779f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x779F 11596 bytes
SHA-256: ce9bf7815686a7e05f3b46c47b509c64ef6e238948107d8fef605f5432b92888

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