Malicious PDF — malware analysis report

Static analysis result for SHA-256 0afd18530ad95764…

MALICIOUS

PDF

42.2 KB Created: 2020-08-08 22:23:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 13bbcf963a904edbc2f54570f9d9e194 SHA-1: 5b26bd94fe345f8b3aa24f9299fcfe81b80f7dc4 SHA-256: 0afd18530ad957642d84684d05113e4bee49fcdc984666e8a6fb1b53656ed077
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to a redirector service (ttraff.ru) that is flagged as malicious. The document body, though heavily obfuscated, contains text suggesting it is an 'unqualified audit report pdf' and includes the malicious redirector URL. This indicates a phishing attempt designed to redirect users to malicious infrastructure, likely for further exploitation or credential harvesting.

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=unqualified+audit+report+pdf In PDF document text
    • http://files.plymouthmusiclessons.com/uploads/1/3/0/7/130739488/bijuku_jevenepug.pdfIn PDF document text
    • http://files.environmentalspillcontrolllc.com/uploads/1/3/1/4/131408256/f4e74d8.pdfIn PDF document text
    • http://files.victorialandis.com/uploads/1/3/1/8/131856491/lifevupawav.pdfIn PDF document text
    • http://files.apparelcolorwork.com/uploads/1/3/1/8/131856133/6506928.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/1/0439/0082/9848/files/asus_fan_xpert.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6982/4407/files/bipuvugotofemaxazesivivom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6126/5062/files/63221464446.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5562/1031/files/35920906905.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/15796621189.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1230/8637/files/1966417711.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7097/9238/files/velivuwobakanedutizofav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3177/3852/files/tugek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6203/4589/files/convert_to_word_document_for_editing_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6042/8962/files/vonedemidifakevugol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9065/4870/files/38063179328.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8208/7588/files/sodunesevikozaxov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9298/2427/files/31654889637.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4816/3733/files/navojobofadalugenelubawap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7467/4083/files/58367217492.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006898.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6898 4972 bytes
SHA-256: faf50185944553e1116dd2601a6b82d6684eb43dad52c265b5af2da10735c839
font_01_sfnt_off00007999.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7999 10124 bytes
SHA-256: b08754677555d872a135fdbb146cbafb271dd58fe34366d9a0b80e784a47eb46