Malicious PDF — malware analysis report

Static analysis result for SHA-256 30916d75e3028e68…

MALICIOUS

PDF

70.8 KB Created: 2021-03-26 09:46:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 30c6e0d7a0c3fd5ac3a9030066f8352a SHA-1: 68b5708034dfd24cfe7c5cd848e4446fd172548a SHA-256: 30916d75e3028e689ef173627b01d625d8ca108c21d5b4a18d097b3ba48ba622
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, a common tactic for link farms and phishing. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, suggesting a malicious intent to redirect users to potentially harmful sites. The ClamAV detection and ML classifier further support its malicious nature, likely as a phishing or malware distribution vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://pelibifir.ru/wix?keyword=dragon+quest+11+official+guide+book+english PDF link annotation
    • https://cdn.sqhk.co/xonepogafix/gchbQhg/sukogizivokenasogidekipux.pdfIn PDF document text
    • https://putukaxuke.weebly.com/uploads/1/3/1/4/131437363/7cdc454a4e.pdfIn PDF document text
    • https://sovopubi.weebly.com/uploads/1/3/0/7/130775052/2630758.pdfIn PDF document text
    • https://buroxaserojer.weebly.com/uploads/1/3/1/0/131070485/wawesov-kapolep.pdfIn PDF document text
    • https://cdn.sqhk.co/wudawagirus/gdXPSgc/grand_stickman_police_hero_crime_city_jail_breakfast.pdfIn PDF document text
    • https://vofitikasu.weebly.com/uploads/1/3/1/8/131871658/jigesubokunot-likiwaleju-xubuga.pdfIn PDF document text
    • https://nizawubanivud.weebly.com/uploads/1/3/4/5/134529200/mogovivipuluvo.pdfIn PDF document text
    • https://cdn.sqhk.co/zonakagud/Mgjhfih/auto_keyboard_presser_for_roblox.pdfIn PDF document text
    • https://cdn.sqhk.co/vovewotutal/fGijMji/plants_vs_zombies_2_free_download.pdfIn PDF document text
    • https://kepefiporewe.weebly.com/uploads/1/3/4/7/134704647/8288218.pdfIn PDF document text
    • https://cdn.sqhk.co/foropogajag/gmqlL7k/star_wars_imperial_assault_app_rules.pdfIn PDF document text
    • https://cdn.sqhk.co/kokuxisa/ijchjz9/71174817973.pdfIn PDF document text
    • https://xuxufidumexed.weebly.com/uploads/1/3/2/6/132681394/taxewiligozegi.pdfIn PDF document text
    • https://cdn.sqhk.co/sogefuluf/cnizey1/xobonoruxoza.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://s3.amazonaws.com/pewebopufupe/dell_xps_13_spec_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/sinamozagemoger/depisasanabin.pdfIn PDF document text
    • https://s3.amazonaws.com/lanaladu/kiwelusuw.pdfIn PDF document text
    • https://s3.amazonaws.com/kokesatodixon/apple_airport_express_2nd_gen_price.pdfIn PDF document text
    • https://s3.amazonaws.com/bupesejirijejus/how_to_do_well_in_public_speaking.pdfIn PDF document text
    • https://s3.amazonaws.com/nakuzafol/1374686819.pdfIn PDF document text
    • https://s3.amazonaws.com/lunojol/xegakudikalox.pdfIn PDF document text
    • https://s3.amazonaws.com/jedadokuti/50439470790.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cae0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCAE0 5548 bytes
SHA-256: bc0b661642895cae65bb28b141fc4ef1b583ff3a7014fc6ccce5badea2abd4cd
font_01_sfnt_off0000ddb0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDB0 9952 bytes
SHA-256: 6b26ee22b9e57ef7ba4bb8d10ca9657a491e2cfdb346c2054a15b10568dc2f58
font_02_sfnt_off0000ff66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF66 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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