Malicious PDF — malware analysis report

Static analysis result for SHA-256 b792eb2547a93881…

MALICIOUS

PDF

40.2 KB Created: 2020-08-14 01:51:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7f3df74d4e0b2adcfd8f593cd11296da SHA-1: 7d9c00cd7c78f189e4be6cb9c00cde061f00ce16 SHA-256: b792eb2547a9388169751b03637ebe5831a6f6077659dbed1ec9e40b7be64686
194 Risk Score

Malware Insights

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

The PDF contains a link farm designed to appear as academic resources, but the primary link redirects to malicious infrastructure at ttraff.cc. This suggests a social engineering tactic to lure users into clicking a malicious link, likely leading to further malware download or phishing. No scripts were extracted, limiting the analysis of direct payload execution.

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/wb?keyword=difference%20between%20flat%20slab%20and%20solid%20slab%20pdf In PDF document text
    • http://files.northwestindianaoutdoors.org/uploads/1/3/1/4/131437074/6626673.pdfIn PDF document text
    • http://jalobip.agelessangelstraining.com/uploads/1/3/0/8/130813528/zomilawalezezum.pdfIn PDF document text
    • http://files.nducuwangugi.com/uploads/1/3/0/9/130969555/gimuviri-megatanizus-selusifo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7304/3622/files/analytical_solid_geometry_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3250/1656/files/mytmobile_login_in.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8897/7813/files/dadiduvakutipige.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6914/4230/files/metal_a_headbanger_s_journey.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4485/5195/files/17285818121.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6723/5742/files/16877577929.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8211/3433/files/mp3_skype_recorder.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9946/2558/files/45881944816.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3538/5243/files/33721334258.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9060/8285/files/love_stage_ep_1_english_sub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3373/8911/files/55376649687.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7047/9768/files/cetoacidosis_diabetica_tratamiento_nutricional.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 8

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
font_00_sfnt_off000051c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x51C4 5380 bytes
SHA-256: 135cc9ba9a49e9c820464a041ca910154940a60f85ce1e2e2ddf02035d972ce6
font_01_sfnt_off00006429.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6429 9912 bytes
SHA-256: 051d046c50d03554ed791122f1629c07f94d00793f2023391a1f2a643c0895fb
font_02_sfnt_off0000864a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x864A 2832 bytes
SHA-256: a29041989fc328615323ee4eba452f56691b7d20c3ae22c6464357b47f37bd2d

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