Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae4112f5341ef687…

MALICIOUS

PDF

42.9 KB Created: 2020-08-28 06:32:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b11d9d4608e6acc63c3dbc85ac37bb75 SHA-1: eca721c702eeab71f600a714026067697f1fc7e9 SHA-256: ae4112f5341ef6871da388196529f6d8dfae85c2f07f8b4c067a3de6fc77e4ee
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing indicating a malicious redirector. The primary malicious URL identified is https://ttraff.com/pify?keyword=enfield+antique+clock, which is likely used to redirect the user to a malicious site. The document body contains garbled text but also includes the malicious URL, suggesting an attempt to disguise or obscure its true nature. The presence of a link farm further supports the malicious intent.

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=enfield+antique+clock In PDF document text
    • http://bisojo.lodgefarmleisure.com/uploads/1/3/2/8/132815176/gizufolawigode.pdfIn PDF document text
    • http://files.houseofgodusa1.com/uploads/1/3/1/0/131070151/kevijipasukepegexaj.pdfIn PDF document text
    • http://wuworopiz.drumgownaschool.com/uploads/1/3/1/0/131070401/9353740.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/1/0430/4669/9165/files/matrix_math.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0465/0772/0854/files/board_size_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3621/9291/files/50631051974.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2216/3866/files/skyrim_ini_files_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4138/0759/files/exemple_de_biographie_personnelle.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4489/5909/files/worevekavemabelepaxepegox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4217/7181/files/noxinizijojunobazuvub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6470/4662/files/ahk_auto_clicker.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1135/8369/files/transistor_biasing_and_stabilization_of_operating_point.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2971/7407/files/73384417404.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5743/9129/files/ap_literature_and_composition_practice_test.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 2

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_off00006bee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BEE 4888 bytes
SHA-256: 78f202113c93ec545372199a521c55113db47a7108cfe8ed6890b12c2a38b81e
font_01_sfnt_off00007ca3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CA3 10120 bytes
SHA-256: 6c662227ecbc4791c2c3dd4080791216e602311a3f228b493aa1567dfcaa7d7c

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