Malicious PDF — malware analysis report

Static analysis result for SHA-256 c123ccc824f87571…

MALICIOUS

PDF

39.3 KB Created: 2020-09-18 09:41:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7e0ebefa3e3db96ec124bdf5a7c11b01 SHA-1: c8da04ed8ac43916d71eb9b1b45daff14d74d24d SHA-256: c123ccc824f8757112f7d8acbda260d5a37445710cea1b9308017d3cc88e5932
184 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, indicating a link farm designed to redirect users to malicious content. One critical heuristic identified a link to known malicious redirector infrastructure. The document body contains obfuscated text and URLs, further supporting the malicious intent. The primary attack pattern involves leveraging these links to lead users to potentially harmful sites.

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.link/wix?keyword=controller+supported+games+online+unblocked In PDF document text
    • http://wovatozob.shiftingloyalties.org/uploads/1/3/1/3/131383982/dubafutegapeje.pdfIn PDF document text
    • http://wabozudo.meriadocbeagles.com/uploads/1/3/1/0/131070792/19497ae3a8db1.pdfIn PDF document text
    • http://files.washingit.com/uploads/1/3/0/7/130775607/rularipegevazabir.pdfIn PDF document text
    • http://files.markdeweyresearchcenter.org/uploads/1/3/1/4/131406082/nunopepufibirup-butaxegineni.pdfIn PDF document text
    • http://files.lessons4learners.com/uploads/1/3/1/4/131437119/gogiwupan-nibelujax-nosasijuzosufo-febosojetup.pdfIn PDF document text
    • http://files.schnauzersetc.net/uploads/1/3/0/7/130739060/gesafizolu-xipowo.pdfIn PDF document text
    • http://jowamafa.leannedomash.com/uploads/1/3/1/3/131380550/8479191.pdfIn PDF document text
    • http://files.wynning-solutions.com/uploads/1/3/1/8/131856826/gabowojigekiza.pdfIn PDF document text
    • http://kafupu.wildfeatherfamilyfarm.com/uploads/1/3/1/3/131384414/jusujezisag.pdfIn PDF document text
    • http://buvodejux.craftingcompass.com/uploads/1/3/2/6/132683459/morixoxa_zagatedafidilap_gipox.pdfIn PDF document text
    • http://xaxukux.marshareevesart.com/uploads/1/3/1/1/131163617/riwasuvur.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://16ee93ff-378e-4b02-8de5-a33a58c12045.filesusr.com/ugd/10cedf_8afed90d51c0414080efa7254bbae97f.pdf?index=trueIn PDF document text
    • https://b610d8b0-8a44-45d7-912a-f801622ef5cc.filesusr.com/ugd/cdb50c_80d60cc00e964c6bad75817e6e1dffae.pdf?index=trueIn PDF document text
    • https://447e311e-3f6f-4f4f-abdd-769332ac0b3a.filesusr.com/ugd/6bb4a2_fbcc73cd443844b3a4565c76b93ad3a0.pdf?index=trueIn PDF document text
    • https://422edf6a-b3ae-4f84-ad2e-05d0b081f555.filesusr.com/ugd/7a359d_d434c08e8f1e4364846d2efff65d0a4b.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 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_off00005b7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B7B 5504 bytes
SHA-256: b813986f017c526f8800a42a1e829a5165481446f883e7abec4418b8fb070725
font_01_sfnt_off00006e0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E0E 9932 bytes
SHA-256: 0b26f93b8b30994aa40d6b7b90306d62b4aaac0e4237df10b59a4f22cd3ad2b2

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