Malicious PDF — malware analysis report

Static analysis result for SHA-256 87aebdee455d581e…

MALICIOUS

PDF

63.0 KB Created: 2021-01-13 14:31:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 5866f0769403de163f85a446aef15965 SHA-1: 96d8fef8b82c2086613dd61f60d9c9104ce22b0b SHA-256: 87aebdee455d581efe214327431dfe78b3a1493e93305f33cac49b22f8b92266
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm or SEO manipulation tactic. The embedded URL 'https://trafffi.ru/aws?utm_term=allah+ke+naam+se+ringtone' is a primary indicator of malicious intent, likely leading to further malicious content or phishing pages.

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/aws?utm_term=allah+ke+naam+se+ringtone PDF link annotation
    • https://site-1247335.mozfiles.com/files/1247335/the_mitotic_spindle_forms_in_which_phase.pdfIn PDF document text
    • https://site-1179506.mozfiles.com/files/1179506/pandora_s_box_5_game.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370288/normal_5fb56b9950fd1.pdfIn PDF document text
    • https://cdn.sqhk.co/bexamajuw/ijqcgib/spiral_parkour_map_1._15_2.pdfIn PDF document text
    • https://cdn.sqhk.co/vuramufef/wpohivK/divudiduvitinusinizida.pdfIn PDF document text
    • https://cdn.sqhk.co/judixixelof/gfBhegd/47340761591.pdfIn PDF document text
    • https://jufukakoxojopop.weebly.com/uploads/1/3/4/3/134317893/tipomejenixinewiz.pdfIn PDF document text
    • https://site-1178301.mozfiles.com/files/1178301/22121649653.pdfIn PDF document text
    • https://site-1168148.mozfiles.com/files/1168148/word_game_apps_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/birenejar/cli7hhL/15504132791.pdfIn PDF document text
    • https://cdn.sqhk.co/makekajet/giDig1X/vovivumevugiloxadegesozel.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427499/normal_5f9c6d18c2c61.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479707/normal_5fbb91f865b9d.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/pukiza/utc_time_now_cst.pdfIn PDF document text
    • https://s3.amazonaws.com/bibejovixapis/wondershare_filmora_full_crack_64_bit.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bb04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBB04 5152 bytes
SHA-256: f037f9470fa6e92e5fd4e17fbab2922511c43757e1b0f0a9c2ed9c9cbf077ebe
font_01_sfnt_off0000cc5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC5F 10620 bytes
SHA-256: ca001eece73ce1d124f627a8c3d33b15cf7e1a48cf02e11153d5976e7b2b822b

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