Malicious PDF — malware analysis report

Static analysis result for SHA-256 a980187050ab70a1…

MALICIOUS

PDF

108.8 KB Created: 2020-12-31 11:47:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 66034d2dc3bd2786c7904b798c75e0c2 SHA-1: 96619d2a8b8169f774fd845021ea35fe4e76ec51 SHA-256: a980187050ab70a170563c17bfc7908ba152e45e726ed4215bcdcee3ca155791
156 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 0.9997

Heuristics 5

  • 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.
  • 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://traffking.ru/strik?utm_term=ball+factory+incremental+idle+games+2018 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4451750/normal_5fb8acfa97acf.pdfIn PDF document text
    • https://cdn.sqhk.co/zururodi/gj9hiic/world_warships_combat_hack_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/wotudasigeb/bHaRgef/jowod.pdfIn PDF document text
    • https://cdn.sqhk.co/waximanodif/iBjgicL/58725027168.pdfIn PDF document text
    • https://cdn.sqhk.co/jasamomedam/eid5ege/resident_evil_revelations_2_walkthrough_episode_3.pdfIn PDF document text
    • https://kixatefibav.weebly.com/uploads/1/3/0/7/130776592/dovunixepowe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485329/normal_5fdb956a480e5.pdfIn PDF document text
    • https://cdn.sqhk.co/kakumipoman/TDLgiLN/atlantis_aquaventure_water_park_tickets_dubai_uae.pdfIn PDF document text
    • https://vekosakebasagi.weebly.com/uploads/1/3/4/7/134743747/relaju_defogojilokaz.pdfIn PDF document text
    • https://cdn.sqhk.co/zofagopipowi/ktVhiAd/adderall_xr_or_adderall_ir.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460063/normal_5fe2f6aea2897.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
    • 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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00015e5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15E5B 5800 bytes
SHA-256: dca6dcc80fa7d467ef98b91825f80de09a23961b44b174001d9539cb16fd1b17
font_01_sfnt_off00017205.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17205 11184 bytes
SHA-256: 7e745f5e0c982367f0f821720f3ea50280299e40a7c76208936393ab381603c3
font_02_sfnt_off0001981d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1981D 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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