Malicious PDF — malware analysis report

Static analysis result for SHA-256 56b8b65c6155ba87…

MALICIOUS

PDF

44.2 KB Created: 2020-08-05 06:52:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 580f813f2db4efeec91d8557d5a244d4 SHA-1: 8377bb5901bd2ff7a0f8dfb8c7617cdda104b9cc SHA-256: 56b8b65c6155ba87cbbea1bef6fcde19c187a3a59ba39576b9dbe2d941f57c84
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'. The document body, though heavily obfuscated, contains the string 'lab safety quiz pdf' and the malicious URL, suggesting a social engineering lure. The PDF also exhibits characteristics of a link farm, with numerous external links, many hosted on Shopify, likely to obscure the malicious redirector.

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=lab+safety+quiz+pdf In PDF document text
    • http://files.barnhille4e.com/uploads/1/3/1/4/131411688/627416.pdfIn PDF document text
    • http://files.sunsetridgeatlanesend.ca/uploads/1/3/1/4/131438299/131e7bf2ab90.pdfIn PDF document text
    • http://files.ceenit.com/uploads/1/3/2/7/132740214/527947522414.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/1/0435/5896/1315/files/gadef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/volobufepafolosovi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3070/8385/files/google_speech_to_text_api.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1471/7597/files/96155416072.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8837/0072/files/pdf_form_creator_software.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7266/0390/files/77896004956.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7647/5290/files/antidote_lyrics_migos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9869/3013/files/nelly_furtardo_all_good_things.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4157/8399/files/compound_adjectives_list.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9158/3391/files/osrs_most_traded_items.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8221/1733/files/pufarilugigosepilise.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_off00006e0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E0F 5264 bytes
SHA-256: b3d42a9b338022d5d748f654855ed627bac9821747e9569933586d7b59dabf29
font_01_sfnt_off0000801c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x801C 10648 bytes
SHA-256: 22d71253005a00d72e29818c41a0888cc6506761d45c6d5229d1fe779ca1c4b9

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