Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf5a8e0c3be80ff1…

MALICIOUS

PDF

57.0 KB Created: 2020-08-23 01:41:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 66abf5d86d29dd0bafd072c3679e6234 SHA-1: 9ec3b1a6b276ab58d287760c50bb6b9d4cff3944 SHA-256: bf5a8e0c3be80ff1fb124c85f0a52ab3ac6d9622e0f6a3bc35e0cf3f957312bf
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a mass of external links, many of which point to a redirector service. The primary malicious link, 'https://ttraff.cc/pify?keyword=3d+printing+filament+guide+pdf', is designed to trick users into believing they are downloading a filament guide, but it actually leads to malicious infrastructure. The document body, though heavily obfuscated, contains references to the lure and the redirector URL.

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=3d+printing+filament+guide+pdf In PDF document text
    • http://files.mothermoonwellness.com/uploads/1/3/1/6/131636725/milekafixevi_kugefet.pdfIn PDF document text
    • http://files.coastnuflow.com.au/uploads/1/3/1/4/131483027/karunarufoluvov_wegopiraximero_detozopu_watakosoxuvo.pdfIn PDF document text
    • http://nutuwopa.mcgrewwoodwork.com/uploads/1/3/1/4/131438563/4f09da.pdfIn PDF document text
    • http://kotig.ubershrimp.com/uploads/1/3/0/8/130874049/mogej_ximuko_vegesogo_vemasigutef.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3161/6923/files/69732935833.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1135/8372/files/gakupipik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6191/1458/files/32559566824.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3884/2779/files/xugin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5652/8544/files/chemistry_final_exam_study_guide_1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8251/3561/files/2548852743.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5930/4865/files/92376217407.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8277/6727/files/napefego.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6773/4171/files/64342092039.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4227/5485/files/norow.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009398.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9398 5024 bytes
SHA-256: 78218c13a14275e41ad0d9581bfef8f74aa91a7db112a7147aabb4d6be1bc187
font_01_sfnt_off0000a48b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA48B 10504 bytes
SHA-256: 6314a41fa7f790e0fb7443271188491b679e8e9737dd7da093d1a25db6731ed4
font_02_sfnt_off0000c878.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC878 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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