Malicious PDF — malware analysis report

Static analysis result for SHA-256 78eab273ae0ffcc7…

MALICIOUS

PDF

42.3 KB Created: 2020-10-06 23:44:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: feba8b02b9d924d169e6a981fe75d2c0 SHA-1: 447203cccd970dd56f49f36e0781dc65410b336e SHA-256: 78eab273ae0ffcc70df718ade2da74e5e011912a02042787cde2be5b26e4a30e
184 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains a large number of embedded links, many of which point to suspicious domains and redirector infrastructure. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK specifically flags a URL leading to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains URLs that are also present in the extracted IOCs, suggesting a coordinated effort to direct users to potentially harmful 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://cctraff.ru/strik?keyword=read+thru+the+bible+in+6+months In PDF document text
    • http://files.kappasigmamu.com/uploads/1/3/1/4/131438228/fusajabetag.pdfIn PDF document text
    • http://jexuzu.thevillageyarnery.com/uploads/1/3/0/8/130814729/9912456.pdfIn PDF document text
    • http://files.kreativedimension.com/uploads/1/3/1/4/131438567/333125.pdfIn PDF document text
    • http://kexedexo.littlecoveliving.net/uploads/1/3/1/4/131438641/70a2d2be84.pdfIn PDF document text
    • http://denuluded.catv35.com/uploads/1/3/2/8/132814838/xusamubutaxi-tagasajakube-zojugojofezu-zijatumomisum.pdfIn PDF document text
    • http://files.artbyannette.com/uploads/1/3/1/3/131384542/rotipudibi.pdfIn PDF document text
    • http://japuzol.drmegangomez.com/uploads/1/3/2/7/132740780/lojamomabama.pdfIn PDF document text
    • http://files.425sqn.org/uploads/1/3/0/8/130814642/zotazaboma.pdfIn PDF document text
    • http://pegusi.changingplaces.hsieteachers.com/uploads/1/3/2/6/132682006/62ea9d6ee5f.pdfIn PDF document text
    • http://maxune.alpost522.com/uploads/1/3/0/9/130969627/000b96aece254b.pdfIn PDF document text
    • http://dejedu.martinisimagedesign.com/uploads/1/3/0/7/130740019/8be2b2.pdfIn PDF document text
    • http://jafegezo.meeshaandpip.com/uploads/1/3/0/7/130776791/guzagesadusapibafu.pdfIn PDF document text
    • http://nejan.barbara-sonner.com/uploads/1/3/1/4/131437594/bisedo_somuvugexepug.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/52c588d3-778d-4df5-b5fa-822a3dc1d4ce/ladinazowuvemetukizepowum.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/973c667e-bae6-4933-a984-340ea15c2b58/29795143801.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000067ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67EC 5364 bytes
SHA-256: 170280a11934763e7e1a6067f0d6bc30a5de4878e52b53751f79b9851c350080
font_01_sfnt_off000079fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79FE 10132 bytes
SHA-256: 83954d2e6629c4f08a88c61efe0b8c5a1d00c1fd4a098d5036a7e46f73b0630a

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