Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f3ae70ac058a137…

MALICIOUS

PDF

46.8 KB Created: 2020-08-14 09:24:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 281096b99ae38a8bfd8c3f1dc6ee45d4 SHA-1: a08cf5f285fd98b1e7483910e83204d51d178558 SHA-256: 7f3ae70ac058a13763a6fc908398d5b309a2572855fff2154062aa3f76b9d464
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File T1059.007 JavaScript

The PDF contains a lure related to 'Chrome settings auto open' and includes a mass of external links, one of which is a known malicious redirector. The heuristic 'SE_BROWSER_INSTALL_LURE' indicates the document's intent is to trick the user into installing a browser extension or update, a common social-engineering tactic for malware delivery. While no scripts were directly extracted, the PDF structure and embedded URLs suggest it's designed to lead the user to malicious content or downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • SEO-redirector lure link (multi-word utm_term) low PDF_SEO_UTM_REDIRECTOR_LINK
    PDF contains a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the search-keyword gateway used by the 'free document download' phishing family. Surfaced as an IOC; on its own this is a low-confidence signal.
  • 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.ru/pify?keyword=chrome++settings+auto+open In PDF document text
    • http://files.essaysandfictions.com/uploads/1/3/1/4/131437172/bdeb7d.pdfIn PDF document text
    • http://files.everythingisnecessary.com/uploads/1/3/1/4/131437949/3553055.pdfIn PDF document text
    • http://files.maidtoshineservices.net/uploads/1/3/1/4/131437268/29f33e.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/1/0430/9378/6791/files/carol_dweck_mindset.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7735/4143/files/reweni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9904/6553/files/manual_acgih_em_portugues.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4606/7621/files/masazometatodonesa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4777/8469/files/bhagavad_gita_file_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2043/5112/files/4254562889.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8150/5695/files/monografia_meio_ambiente.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/denikiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8768/1954/files/celiac_disease_review.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2903/5158/files/animal_tissue_culture_books.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_off000079d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79D2 5108 bytes
SHA-256: 946762319d3621023a2301e8ee390ce65ccbd5e576aaad478ce8c64bb8f3bdcb
font_01_sfnt_off00008b0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B0E 10436 bytes
SHA-256: 50023aa44ef8d1d7daa8d07549b0fc929f709d7ed41f82da704d185ba293a5f5

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