Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b13e87138be93ce…

MALICIOUS

PDF

43.4 KB Created: 2020-07-29 17:30:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d49a68e723373b7586e0432565e742f0 SHA-1: 512ba6e8069fa7a0e5bd7a3e5a77aa97308363be SHA-256: 9b13e87138be93ce33d56c31a3b2d679f07d02735433b460929f6f2595f33ac2
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 a job vocabulary PDF. This indicates a phishing attempt to lure users to malicious infrastructure. The PDF also contains a link farm, suggesting an attempt to manipulate search engine results or distribute malicious content broadly. The ML classifier strongly supports the malicious nature of this PDF.

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=looking+for+a+job+vocabulary+pdf In PDF document text
    • http://files.stevenmarkholliday.com/uploads/1/3/1/3/131384589/vupujodobale-rebidazov-dobimivosuve.pdfIn PDF document text
    • http://files.jaytotha3.com/uploads/1/3/0/7/130775737/bewaleraw.pdfIn PDF document text
    • http://files.sanmarinogirlscouts.com/uploads/1/3/1/4/131482953/xumilufefi-ditobebu.pdfIn PDF document text
    • http://files.emimendoza.com/uploads/1/3/1/4/131406068/5322487.pdfIn PDF document text
    • http://files.thistallawkwardgirl.com/uploads/1/3/2/3/132302910/0749012.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/1/0432/3871/9648/files/72293794108.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4827/9957/files/6416123555.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8127/7342/files/resebigo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1463/6198/files/7638236135.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0378/9991/files/zevukuderemikejomo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3501/6863/files/85135364020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6568/7717/files/siregegapo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7663/2214/files/pedugosaponinukeromet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0124/9955/files/25236300537.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8067/9577/files/80579289824.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9117/9160/files/dexujivabetafuvifaluxet.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_off00006c26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C26 5212 bytes
SHA-256: 3b988d356320dcc30f28fd3e29412cdfa67206029d4fb632d2d5a25139c00d43
font_01_sfnt_off00007df4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DF4 10292 bytes
SHA-256: 7b653ef77847bea5b564cb61e7a78c4f8d3958d911076ad28f59fee7755d3a7f

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