Malicious PDF — malware analysis report

Static analysis result for SHA-256 39075fbafa37750b…

MALICIOUS

PDF

75.8 KB Created: 2021-02-27 21:45:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 1c818a36d4f6e190e50238b352ca5d72 SHA-1: 5316f8f5b22153c94d52a614301b0e2b80130b74 SHA-256: 39075fbafa37750b38c74d5c28e8e03f8c04b271e5f67b9b32a19cc8116266bc
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://soxebez.ru/wix?keyword=tap+to+talk+ipad PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4421333/normal_5ffe012c226c6.pdfIn PDF document text
    • https://wawupibinotab.weebly.com/uploads/1/3/4/9/134900246/dad4c5d65906e6.pdfIn PDF document text
    • https://bizavewes.weebly.com/uploads/1/3/5/3/135323934/nukesilubegu_nejajote_temadidovo.pdfIn PDF document text
    • https://cdn.sqhk.co/rifelefiw/eihmjhB/77562753180.pdfIn PDF document text
    • https://kijujiwovijuk.weebly.com/uploads/1/3/1/4/131453096/xikipabi_tupixogosu_mafewinetufiti.pdfIn PDF document text
    • https://cdn.sqhk.co/vipujitebiki/qjggiLR/vusepafizakuneduxidonu.pdfIn PDF document text
    • https://cdn.sqhk.co/xijogedobu/if0GGjg/android_auto_2._9_app.pdfIn PDF document text
    • https://cdn.sqhk.co/buzovegom/DgirMbo/vefun.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384304/normal_6005ad442e363.pdfIn PDF document text
    • https://cdn.sqhk.co/tezofugowura/bGjgOgc/72946047594.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480155/normal_6009fb9223640.pdfIn PDF document text
    • https://cdn.sqhk.co/zasemewiti/Zridjjc/voxekakawifomukasiweto.pdfIn PDF document text
    • https://nateguwab.weebly.com/uploads/1/3/1/4/131453796/bosajaraxovin-xetowawumamosix-bifexu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/siwixomudit/xumuvavotiwosoduvukonufop.pdfIn PDF document text
    • https://s3.amazonaws.com/jiguwuzobozobaz/votixoledata.pdfIn PDF document text
    • https://s3.amazonaws.com/perurulexi/77210160607.pdfIn PDF document text
    • https://s3.amazonaws.com/waxapoz/romeo_and_juliet_1968_bedroom_scene.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_off0000ee7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE7B 4692 bytes
SHA-256: 6e1771667ff77d27df2403b19cffb913e9ee8105e8751129669abc7d384af98c
font_01_sfnt_off0000fe84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE84 10412 bytes
SHA-256: c3a3e00fc04036e07d4a8d4d4482ba66eaa7c20cc8bd9987fea5f72d2889c954

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