Malicious PDF — malware analysis report

Static analysis result for SHA-256 134dd2b1af1a7e27…

MALICIOUS

PDF

45.4 KB Created: 2020-07-29 17:33:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3e17493b38803baeef837a6154f8a729 SHA-1: c3bf4e1ad007cb785941ecd045391e03e4e822ef SHA-256: 134dd2b1af1a7e27261ab6bee9650b049885c8fecfb444822ef6fce625c6c6de
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links designed to redirect users to malicious infrastructure, specifically identified by the 'PDF_MALICIOUS_REDIRECTOR_LINK' heuristic. The primary redirector URL is 'https://ttraff.ru/pify?keyword=afterburn+aftershock+pdf+portugues', which is also flagged as an SEO redirector lure. This suggests a phishing or scam attempt disguised as a free download.

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.ru/pify?keyword=afterburn+aftershock+pdf+portugues In PDF document text
    • http://files.callahansclassroom.com/uploads/1/3/1/8/131872054/lapilenanuvap.pdfIn PDF document text
    • http://files.yburban.com/uploads/1/3/1/4/131408432/faropefow.pdfIn PDF document text
    • http://files.gnv-daerligen.ch/uploads/1/3/0/8/130814774/dezadaselowu.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/1/0437/3377/8597/files/fimimasisatudopiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5232/5272/files/99368521327.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5575/2103/files/jaralutasuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4816/3733/files/rufupifomonokumomadotox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3685/1874/files/31061504039.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0431/1190/files/11451901874.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0428/0481/files/sokopixumubed.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5287/6455/files/74520558137.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6172/1765/files/30324392446.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9842/1913/files/39621126313.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0749/0717/files/14266038014.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2925/0719/files/10164403499.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5727/4270/files/11245990649.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 5

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_off00007367.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7367 5412 bytes
SHA-256: 1fcd1fcf9667dc75260d14833d08c40d1543408856dcda6497b3cf86515d2fa3
font_01_sfnt_off000085ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85BA 10240 bytes
SHA-256: 70c47fe8c7c0069cb49261785195beb78f5d5512e98d88fc65f0dbbb02212e16

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