Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad6c2dd57c18a383…

MALICIOUS

PDF

49.4 KB Created: 2020-08-15 10:11:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 880005bbebbd9a2c0bba839ef20b2852 SHA-1: a7df35211741a453a947f3195c23ec7dc0d9a3f9 SHA-256: ad6c2dd57c18a38390d0725d9dae828d34af2fa085a3c2d42f25e5eada3a40c5
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 legitimate content, but the primary link redirects to a malicious URL. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' indicates that the URL https://ttraff.cc/wb?keyword=complex%20numbers%20word%20problems%20pdf is part of a known malicious redirector infrastructure. The document body, though heavily obfuscated, contains this same URL, reinforcing the malicious intent. The presence of numerous other PDF links suggests a broad attempt to distribute malicious content.

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=complex%20numbers%20word%20problems%20pdf In PDF document text
    • http://files.amaartllc.com/uploads/1/3/0/7/130776077/67474a48e9eb.pdfIn PDF document text
    • http://files.ellenjaudon.com/uploads/1/3/2/7/132710765/godawuxopowoj.pdfIn PDF document text
    • http://nanusabe.exoticconfessions.com/uploads/1/3/1/4/131482975/b3df80defcb5a.pdfIn PDF document text
    • http://files.someoneelsemovie.com/uploads/1/3/2/7/132740584/radamut_jogun_xeletop_bamevezuwuloti.pdfIn PDF document text
    • http://vanixoxa.graphitedesign2.com/uploads/1/3/1/8/131872155/besiwebir.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/1/0430/9788/2773/files/wivifagozitesolirumik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3455/0173/files/wimubologikiraralugo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4852/5208/files/84047424175.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3640/8982/files/96940857588.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4127/4521/files/how_to_calculate_era.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6956/2266/files/motion_with_constant_acceleration_problems_with_solutions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3161/6923/files/7818419087.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2328/5928/files/26083161028.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6633/6167/files/84646975303.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000076f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76F6 5180 bytes
SHA-256: fe8527ea6dc37dc120d9a55a3941c25344721003621c035927cfd791ecd72a2e
font_01_sfnt_off00008888.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8888 15412 bytes
SHA-256: 1d2cc08abedb18dbd2ce33713dbd178bf6295dbadb09dbd76c0653c2740e177b

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