Malicious PDF — malware analysis report

Static analysis result for SHA-256 312e1ba705c382e7…

MALICIOUS

PDF

198.1 KB Created: 2020-07-28 21:17:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 148ecbf78f87cd840eef52f4c2edef67 SHA-1: 021cdf8799228c1ff3967f7d41683a9c07034f5d SHA-256: 312e1ba705c382e7d2a345dce0b034eee0c353f8f8b0ec6b059f1d88bfa28bea
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link

The PDF file contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains language that suggests urgency, aligning with the SE_URGENCY_LURE heuristic. The primary attack vector appears to be tricking the user into clicking the malicious URL embedded within the document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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.
  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=spanish+worksheet+imperfect+tense In PDF document text
    • http://files.decgallery.com/uploads/1/3/1/3/131384789/cc8b20d.pdfIn PDF document text
    • http://files.mosaiclodge176.ca/uploads/1/3/1/3/131398547/botolaxer-fegatelaxoparut-daworu-xuzufa.pdfIn PDF document text
    • http://files.profiledesigntooling.co.uk/uploads/1/3/1/4/131408027/gokopimenixubi.pdfIn PDF document text
    • http://files.renewableblooms.com/uploads/1/3/1/4/131453950/7522263.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/1/0428/9213/2511/files/fobazowe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zinigezumapafukutogu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3088/8094/files/meguv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2492/5347/files/kukota.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2412/0984/files/14188921408.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5625/1555/files/98895190615.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dijev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2775/1321/files/wufag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9511/2347/files/33836352619.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kenawuvotijogajutimev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6888/3098/files/58296585346.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2470/1845/files/gejasamezimejufuta.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4819/8556/files/40429761300.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_off0002c931.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C931 5272 bytes
SHA-256: d05f364bc21096e96209076e59735fe2b9e6d9e500c6db0260cc2b297071fc9c
font_01_sfnt_off0002daf2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DAF2 15076 bytes
SHA-256: 196127341f7ca0409020f200d3b08dc6c2ac09d359dba47b155165116467c863

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