Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b0271c9e859e024…

MALICIOUS

PDF

67.7 KB Created: 2020-11-19 05:40:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: d89fc1a7b0a4c6ced93a27c10be7fa0d SHA-1: 2e8cce48f68a9de71d90cb912c807389bfdb7e16 SHA-256: 4b0271c9e859e0243fada79503f4e05c9f41f6a1ada070539e753278dd025585
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafffi.ru/123?utm_term=etowah+county+warrants PDF link annotation
    • https://goraworozegisu.weebly.com/uploads/1/3/4/3/134324811/3571713.pdfIn PDF document text
    • https://vefigemeg.weebly.com/uploads/1/3/4/3/134368147/4d79dccfe044.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365555/normal_5f87507b8ea59.pdfIn PDF document text
    • https://jezitazosebizag.weebly.com/uploads/1/3/4/7/134700096/2796375.pdfIn PDF document text
    • https://wipomozexabezi.weebly.com/uploads/1/3/0/7/130776841/3822180.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379217/normal_5fad975da25e7.pdfIn PDF document text
    • https://zonerizarom.weebly.com/uploads/1/3/4/3/134310007/8069433.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/bbda911f-3b23-4264-b782-1cc5a0a1a701/partition_il_changeait_la_vie.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c3d1b7f0-47dc-49b4-9da1-1238ff561ce9/pokemon_go_tracker_app.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ad8ba6e8-dc9a-4d5e-883c-8e418ac335cb/titivigizima.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/285f19b4-4afe-4dac-821b-d6aade6202b9/dubabipinegawawe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6eb6cff6-32fe-49b1-a481-96e9a2e85475/fivarowewu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/de062090-6c9e-4c85-926f-1285d91d19bb/detujo.pdfIn PDF document text
    • https://s3.amazonaws.com/vonusirukete/minotoradad.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4a899efc-0432-4820-8ee1-fea04c44db25/teacher_science_store.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8ed6a5f7-799a-4072-bc3d-4ed0aa4749ed/xudet.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
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn 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_off0000c115.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC115 5004 bytes
SHA-256: 5216de48e047571ad93c00548dfd06c0c860fa35ee30f9a4e393f848fd40aeec
font_01_sfnt_off0000d22c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD22C 3720 bytes
SHA-256: d5ecec3e822993868ba70e247019bcdb656a9fee58d620eb93bc70658e929280
font_02_sfnt_off0000dd8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD8F 10748 bytes
SHA-256: a736ba445c992328200af0dcd6d2988542f17ccfe55f199ea0a1a0bd7350f1de

Open this report in the interactive analyzer, or submit your own file for analysis.