Malicious PDF — malware analysis report

Static analysis result for SHA-256 b5f3528bd753afee…

MALICIOUS

PDF

45.3 KB Created: 2020-08-19 00:57:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: df76437e706b24c5b653da5609a7345b SHA-1: 8acb092f081b12c001457ef6c17e2e3702c21eb9 SHA-256: b5f3528bd753afee56aceabc83420034d42fd44a3b742a26be3799ce76256e9b
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to potentially malicious redirectors or link farms. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=sketchup+layout+templates', suggesting a lure to download further content. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' confirms the presence of links to known malicious infrastructure.

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=sketchup+layout+templates In PDF document text
    • http://ruzigop.mazeaudio.com/uploads/1/3/1/8/131857152/3136855.pdfIn PDF document text
    • http://files.mrtobinsearthscience.com/uploads/1/3/1/8/131871734/wupuwun_riguwof.pdfIn PDF document text
    • http://bolixek.addisonwalton.com/uploads/1/3/1/0/131070420/satatib-maxov.pdfIn PDF document text
    • http://rejinijas.winneconnethriftgift.org/uploads/1/3/0/7/130739069/gejegimu.pdfIn PDF document text
    • http://files.pussycatscomics.com/uploads/1/3/1/4/131437822/3381289.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/1/0434/8962/4224/files/57592324121.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3885/1751/files/zunogazel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2590/7368/files/40695194089.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9311/2472/files/mastering_manga_with_mark_crilley.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/7613/0718/files/22900201849.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4168/5665/files/35779090005.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9411/4453/files/diksyunaryo_ng_arkitekturang_filipino.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5794/6530/files/xoxiboxopiwuriwoforeda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4569/0266/files/pumirevafopemof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4287/1208/files/digestion_perfecta.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 2

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_off0000731a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x731A 5344 bytes
SHA-256: 527c25a6a52ddabba73c90ce29619bdcfd2e735552152e613ff6ac2c271e7b20
font_01_sfnt_off00008537.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8537 10360 bytes
SHA-256: 14b5c4110a924ad27090a05e9f93d4e429cc89b0758e38c48f6c434108aa8c54

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