Malicious PDF — malware analysis report

Static analysis result for SHA-256 d85791f5f817e22b…

MALICIOUS

PDF

40.2 KB Created: 2020-08-19 09:54:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e0f80385156ae356681574cebc13abae SHA-1: 9f42f3c2c053647cf3e3bb33acdf32fc827385da SHA-256: d85791f5f817e22baa8911bf579cf831413e147958b44dea6c0d10f1a04cc58b
194 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.cc, which is disguised as an 'impossible quiz answer'. The document body, though heavily obfuscated, contains this URL and other links to PDF files hosted on various domains. The presence of a link farm and a malicious redirector strongly suggests a phishing or scam attempt designed to lead the user to malicious content. No scripts were extracted, limiting the analysis of direct execution capabilities.

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/pify?keyword=impossible+quiz+answer+level+41 In PDF document text
    • http://files.weesewoodgems.com/uploads/1/3/1/4/131438477/a55af3bc7.pdfIn PDF document text
    • http://files.melansonmotors.com/uploads/1/3/1/3/131398099/a11b004511.pdfIn PDF document text
    • http://files.crochetiveconcepts.com/uploads/1/3/0/7/130738921/xapemudizowi_tafuritiba.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/1/0431/9150/0961/files/augmented_matrix_solutions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6938/2568/files/37999895506.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9981/4056/files/sibamifafagituvajadewirut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2799/6565/files/63061736653.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6280/3097/files/fufilumivikogus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0778/6654/files/64609633926.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2228/5976/files/13826889806.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8044/1238/files/91888770278.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4154/4599/files/lee_load_all_2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3196/0474/files/49144176443.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1602/7303/files/admirvel_mundo_novo_baixar.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 4

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_off00005d9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D9E 5508 bytes
SHA-256: 2d973aa9c5c55da1fbfe1c4cfe32a7387da92e46e0efefbd749287707875dae3
font_01_sfnt_off0000706a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x706A 10588 bytes
SHA-256: d4be631582e814b70ae5187d27cf73c56fb08ab675d2dba7128a06d2be9acf2a

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