Malicious PDF — malware analysis report

Static analysis result for SHA-256 beb600fe29320be9…

MALICIOUS

PDF

160.0 KB Created: 2021-03-13 22:58:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 616f48d1be37174c478c87ae85eb53f6 SHA-1: 5cceece3f823f47a3c77dc5a2a3f1f21e1ecb7fc SHA-256: beb600fe29320be90ff7a68cb7f00c71a67f6623a12282a6622de300f27f6cca
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

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 0.9993

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 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://midufefew.ru/wix?keyword=fake+root+permission+apk PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4412757/normal_5fca7abd3f14e.pdfIn PDF document text
    • https://cdn.sqhk.co/lagidexetin/Iicwid5/como_hackear_empire_war_age_of_heroes.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426815/normal_600fccc577524.pdfIn PDF document text
    • https://cdn.sqhk.co/zosiwikiw/282aihn/real_cricket_20_mod_apk_for_pc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368741/normal_5fffa85723fc8.pdfIn PDF document text
    • https://cdn.sqhk.co/bavimimo/IDgggeo/soturavetopowas.pdfIn PDF document text
    • https://cdn.sqhk.co/tibidimewako/gjgHhjx/neo_geo_pocket_games_on_switch.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
    • https://d23eb412-52e1-45ef-a32a-0c032022daee.filesusr.com/ugd/03485a_03422dd4356a4ab4bd218c08787678ca.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/f1b2cd36-22b3-4626-8779-a0ab18abae31/how_to_reset_yamaha_rx-v781.pdfIn PDF document text
    • https://s3.amazonaws.com/bajapovogam/biwat.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/19dadaf6-0d37-40f6-b372-b8fec8d35f9a/can_animals_survive_without_air.pdfIn PDF document text
    • https://s3.amazonaws.com/fapaga/pronoun_antecedent_agreement_worksheet_1.pdfIn PDF document text
    • https://1cdd1dcb-54a5-4750-95ad-c4cce9a68cd1.filesusr.com/ugd/1e32c2_454ed0cceef84b41b77d71910a046114.pdf?index=trueIn PDF document text
    • https://d3dd75b0-514a-4dbf-a1f7-973a5b421fb1.filesusr.com/ugd/5b46ec_18bcdbba0aec4c4fb4aef8399da2c1ad.pdf?index=trueIn PDF document text
    • https://cb70cc59-2297-49c3-b7e2-2ac7e26e28d4.filesusr.com/ugd/4479ed_d0425a9d48f241cea90bae261f98f552.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/c9c48c9d-2485-4f24-a4fe-1d2a20e1df32/31582073883.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

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fa4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA4B 103924 bytes
SHA-256: 589e0c882d4357259a2f13e6d0207195d1760dd12232eb1d4b1f224c70c582f8
font_01_sfnt_off00022e99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x22E99 4740 bytes
SHA-256: 035055ceea7f4871746bcc38de7cc64536cf6b42dfc9d4a99a98b418558678c4
font_02_sfnt_off00023e92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x23E92 11224 bytes
SHA-256: bd2ae06ae7a3249eb2443b808e1cf6a0accd118e9f24a18d214893c156c5e278
font_03_sfnt_off0002651f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2651F 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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