Malicious PDF — malware analysis report

Static analysis result for SHA-256 5960a00fd150b98f…

MALICIOUS

PDF

35.7 KB Created: 2020-09-22 07:41:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 90af20a5160114437058335d24a6469f SHA-1: a8daacf671d3db6790f584f80242f1f4a8e6f12f SHA-256: 5960a00fd150b98f5bce96212208d1344814997d6e247e25e9707d3296a3760b
184 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to domains associated with link farms and redirectors. The document body, though heavily obfuscated, contains text related to a book title and URLs that appear to be part of an SEO poisoning or link farm scheme. The primary malicious URL identified is https://ttraff.me/wix?keyword=the+bedford+handbook+10th+edition+pdf+free, which likely serves as a redirector to further malicious content.

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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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.me/wix?keyword=the+bedford+handbook+10th+edition+pdf+free In PDF document text
    • http://jopudi.weaitmusic.com/uploads/1/3/1/4/131483027/zubijutujuzoge_mosamejijosat.pdfIn PDF document text
    • http://files.msmchemistry.com/uploads/1/3/2/7/132740618/502859.pdfIn PDF document text
    • http://bikudi.wipinc.net/uploads/1/3/1/3/131383790/f8caf.pdfIn PDF document text
    • http://wugowama.memoriesofvignacourt.com/uploads/1/3/2/6/132680981/xiwazi_bamuxumup_bavas.pdfIn PDF document text
    • http://files.ctsulianah.com/uploads/1/3/1/4/131409090/mexudexalafelumul.pdfIn PDF document text
    • http://wibasus.columbiabands.org/uploads/1/3/1/3/131379730/jomavodeko.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://dc33c77e-e8cd-4369-a884-9b73f743b2bd.filesusr.com/ugd/d5cf39_061e71100e0e478eb55361cb52250def.pdf?index=trueIn PDF document text
    • https://c5c5e2b6-85b9-4b97-9a9f-620b8a0e8aa2.filesusr.com/ugd/575fb0_13b02dc16f864f4ca7ec2fae07e6244f.pdf?index=trueIn PDF document text
    • https://6b05c426-24f3-425b-bd9d-3fc99594b89a.filesusr.com/ugd/b09e1d_7a52935128ce4ad1a9c51795e214ebb8.pdf?index=trueIn PDF document text
    • https://470f0707-d963-409c-a2d9-bbac4a0c8acb.filesusr.com/ugd/33ab24_34be40cf3cc64104aa4425716d4988f3.pdf?index=trueIn PDF document text
    • https://4d36acb3-462c-4411-8859-ec11d71b07a6.filesusr.com/ugd/bc4951_572d26d8289e4da2bd4bddb0ff4fceda.pdf?index=trueIn PDF document text
    • https://60498d8a-cc0a-463f-b25e-f1e7633b42c5.filesusr.com/ugd/0dd040_ae324e4fdf1347ebb9e6ecab632463c5.pdf?index=trueIn PDF document text
    • https://4e2ec9c4-1f8b-4f3b-95de-f21cea943d57.filesusr.com/ugd/3de8a6_cf589b6a69c44d95a2d3a321780f27cb.pdf?index=trueIn 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 4

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_off000043f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x43F7 5056 bytes
SHA-256: 0b881e38d9c46212ef8c9bc43b069f4d52d01fe0fc5140c26f3bcb3a95e3bd11
font_01_sfnt_off0000550e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x550E 9056 bytes
SHA-256: b8d00e8cd916215908b417d890f50ddbff2459624c71eaf03fbb5d5a01b9fa86
font_02_sfnt_off000073f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73F8 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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