Malicious PDF — malware analysis report

Static analysis result for SHA-256 a29b019dd6e56439…

MALICIOUS

PDF

40.2 KB Created: 2020-08-16 16:39:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4f8ac37be70e03e92887e21d54593c8b SHA-1: efba884eb22b6f943573e508f719a2ea3b92657b SHA-256: a29b019dd6e564395f388f9bb41a3b77a74a86ead52ef22896c04b4ec3b34542
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.cc'. The document body, though heavily obfuscated, contains the same URL and a list of other URLs hosted on Shopify, suggesting a link farm or redirection strategy. The primary malicious URL is 'https://ttraff.cc/pify?keyword=choose+3+forms+of+the+verb', which is likely used to redirect users to a malicious site for phishing or malware delivery. No scripts were extracted from this sample.

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.cc/pify?keyword=choose+3+forms+of+the+verb In PDF document text
    • http://files.hughespropertymaintenance.co.uk/uploads/1/3/1/4/131453595/f38c5.pdfIn PDF document text
    • http://www.opentle.orgIn 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/1/0437/1605/1112/files/sanazutevuwivagizoju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0452/3845/2381/files/liste_des_activits_auto_entrepreneur_maroc.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2596/4949/files/icas_maths_2018_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/3537/0407/files/towexezetokutiku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1378/3203/files/41254019079.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/8301/7895/files/altar_de_muertos_prehispanico.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0193/0143/files/golutojujololavorek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2131/1910/files/git_remove_remote_tag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4100/5480/files/95415106976.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://www.gnu.org/licenses/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 4

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
stream_004_off0000598a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x598A 9100 bytes
SHA-256: f9e82445f29510711c70f456ff830f563e0646d1bafee75b81c5ba7d988e1a1a
font_00_sfnt_off0000488e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x488E 5032 bytes
SHA-256: e15e44d29eb634f2ab084549b79fa4ea29281f12c7e77060cc40ad4ca854ce94
font_02_sfnt_off000072cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72CC 9688 bytes
SHA-256: 3f41d542e27ed4a64b67be1d2d6b0a6b2c092c0b1aa6db368b3620f5bb231e9c

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