Malicious PDF — malware analysis report

Static analysis result for SHA-256 51b64cdb30594825…

MALICIOUS

PDF

174.3 KB Created: 2020-08-04 20:51:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 93e22383a9a86d65a3b518daa082dfad SHA-1: 28c377abf97d117576af29df0ea88f40cba56bf4 SHA-256: 51b64cdb305948257db5dda63e59f7343594f9acad41bfd1ba73e31bae87fc07
142 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains fragments that suggest an urgency lure, such as 'account will be terminated' and 'action required within 24 hours'. This indicates a likely phishing or scam attempt designed to drive users to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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=apa+reference+style+pdf+latest+edition In PDF document text
    • http://files.revwalter.com/uploads/1/3/2/8/132814305/likeginidomo.pdfIn PDF document text
    • http://files.titanguitars.com/uploads/1/3/1/4/131483254/610317.pdfIn PDF document text
    • http://files.rigirozziarts.com/uploads/1/3/0/7/130739227/sumode_simenegozipofek_rizinideki.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7054/6329/files/5451633610.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2330/9727/files/ruminupizanajopaxowipeg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6535/2095/files/3528888773.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8861/8396/files/fugomuwekikamodeluseg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6009/9222/files/nakuwuzurimovijofej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5359/6310/files/rojusavomutirowapol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3093/6733/files/kemikaviruvolig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8843/7655/files/68009476881.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0962/2695/files/rukagepidamiwitiwifo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7921/8838/files/southwest_check_in_mobile.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7725/5836/files/satamokadidexemivutusav.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000260e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x260E3 5028 bytes
SHA-256: eeb1dec8d093b9f3b08c3ef7086a4f16fb428336617dddb2aaaa733ca69d18d9
font_01_sfnt_off00027205.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x27205 12696 bytes
SHA-256: 5623ee99a75d2b690cdcbc45f43eb5883ead9c4980bf3d3ebfa5b02900ede8bb
font_02_sfnt_off00029cbb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x29CBB 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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