Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc91f146bbe7b249…

MALICIOUS

PDF

35.4 KB Created: 2020-08-19 07:38:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a516293c65680708026e803afe41037f SHA-1: 0090a053a3d1e49b9eeab5bb101279996d088295 SHA-256: fc91f146bbe7b2498d6d5d4a0731a68cac564b07f19aad33a50a890d17baab2d
242 Risk Score

Malware Insights

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

The PDF contains a high number of embedded links, many pointing to Shopify domains, suggesting a link farm or SEO poisoning attempt. One critical heuristic indicates a malicious redirector link to 'ttraff.cc', which is likely the primary malicious destination. The 'SE_PASSWORD_ARCHIVE_LURE' heuristic suggests the document's purpose is to trick the user into believing they need a password for an archive, a common tactic to evade initial security scanning. No scripts were extracted, limiting the analysis of direct execution behavior.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 7

  • 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.
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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.cc/pify?keyword=online+game++sites In PDF document text
    • http://jaxuta.rachaelbudd.com/uploads/1/3/1/4/131453133/tibikajigotef_xenidalexowov.pdfIn PDF document text
    • http://files.epicfh.com/uploads/1/3/1/3/131383629/56fed03568bd22c.pdfIn PDF document text
    • http://bokopuku.dovetailmt.com/uploads/1/3/0/8/130814729/muvapim-romugepaduwel-romerot.pdfIn PDF document text
    • http://files.completecarechiropractictables.com/uploads/1/3/0/7/130739922/xefadu.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/1/0438/6763/5867/files/blackbird_beatles_tab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5117/9416/files/78907474610.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1062/9532/files/taluzekazivofezixuvezegis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7023/4527/files/66598708275.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4492/1766/files/69417126413.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7070/9142/files/briggs_and_stratton_carburetor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5651/2676/files/bedikepes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0056/0805/files/webono.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0745/1041/files/top_10_engineering_colleges_in_hyderabad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1236/5211/files/adobe_audition_free_for_pc.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2875/0241/files/chevy_truck_steering_column_parts_catalog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9453/1486/files/hunger_games_book_file.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_off00004ef8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4EF8 4936 bytes
SHA-256: 928e67c40837658faefacadb196594fc446d79b64dd973866e7bc73adc7c6542
font_01_sfnt_off00005fb6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FB6 9760 bytes
SHA-256: 6d19fd889ca749d8210fc71f5f73592be3b78d262a376ca152af0f9bf345c78d