Malicious PDF — malware analysis report

Static analysis result for SHA-256 6538344980402b15…

MALICIOUS

PDF

87.2 KB Created: 2020-08-11 18:33:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6cc2dc9586c60b43bd4b5d372b4a15e3 SHA-1: 35c48bf0ce8d51afc35e3169163195644d2750ac SHA-256: 6538344980402b15409c045b493d248428e65858f45f32ad03e9c1d51b7a1b23
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, many pointing to a redirector service (ttraff.com) which is flagged as malicious. The document body, though heavily obfuscated, contains a URL that matches the redirector. This suggests the PDF is designed to distribute malicious content or phish for credentials by leveraging SEO tactics and redirectors to obscure the final malicious destination.

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.com/pify?keyword=acca+f5+kaplan+exam+kit+pdf In PDF document text
    • http://files.2spoiledpups.com/uploads/1/3/0/8/130873708/bupigel-rumagodato-kupami-tijivumo.pdfIn PDF document text
    • http://dadan.inglesespecializado.com/uploads/1/3/0/8/130814328/4840430.pdfIn PDF document text
    • http://files.majoringinfiber.com/uploads/1/3/2/7/132740978/c19e7e067a4852.pdfIn PDF document text
    • http://files.ricballroom.com/uploads/1/3/1/3/131398419/bonikugotunupoberoj.pdfIn PDF document text
    • http://files.tantricshadowcoaching.com/uploads/1/3/1/3/131379532/4485095.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/1/0433/0687/7080/files/gizazuvolabemonixodokij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7614/8638/files/craigs_list_kitsap_county_wa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1344/7584/files/5335640475.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4185/7448/files/kuzujaxodafowimot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8523/4338/files/jakuvabarasos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0063/5290/files/business_partnership_agreement_south_africa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3290/3833/files/65725805256.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1358/6596/files/fananunupamawolutu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0459/1271/files/salient_features_of_banking_regulation_act_1949.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6906/3836/files/75209925942.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7097/9237/files/converting_pptx_to.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1855/9393/files/44418093024.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0200/3619/files/pitched_roof_construction_details.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000117fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x117FA 5272 bytes
SHA-256: dca618cb6553eb256072300f0dcec2de991d168fa614d4f18cf7a067b3827e56
font_01_sfnt_off000129e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x129E0 11068 bytes
SHA-256: 1454a60f1cd380f6ce600ff2b82939b23f23056732f5fe7b9ad4ed1010157f06