Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a69a60a73c9f59e…

MALICIOUS

PDF

95.8 KB Created: 2021-03-18 01:19:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 6051bd0033b3db92d27ba7f427780757 SHA-1: 23916dbaa0b5aeb49b4a7471abd1a20934b30b58 SHA-256: 2a69a60a73c9f59ee8928fa2153c39b0c3ffe1ae3d3d8ccf1be5baa9e3d44aa7
194 Risk Score

Malware Insights

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

This PDF file exhibits characteristics of a phishing lure, specifically using a 'free download' pretext for 'Lonely planet japan pdf free download'. The presence of a large number of external links, many on disposable hosting, strongly suggests a link farm designed to redirect users to malicious sites. The ClamAV detection and ML classifier further confirm its malicious nature, likely serving as a dropper or redirector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 7

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://fokemale.ru/strik?utm_term=lonely+planet+japan+pdf+free+download PDF link annotation
    • https://zusavakaki.weebly.com/uploads/1/3/0/8/130815140/dcbe57.pdfIn PDF document text
    • https://cdn.sqhk.co/wuxaguzifep/4hg7QNN/stampede_houston_dress_code.pdfIn PDF document text
    • https://cdn.sqhk.co/lowuxegas/fU4ib9P/75096068823.pdfIn PDF document text
    • https://vetepoxep.weebly.com/uploads/1/3/5/3/135302771/radejasogubedazabu.pdfIn PDF document text
    • http://getcabinets.xyz/438343050943z18h.pdfIn PDF document text
    • https://wozizagozesa.weebly.com/uploads/1/3/4/8/134848764/manitoz.pdfIn PDF document text
    • https://cdn.sqhk.co/fazologim/hYidrMy/naditexuvuguxala.pdfIn PDF document text
    • https://cdn.sqhk.co/bukevexej/75HBhe7/need_for_speed_underground_rivals_car_list.pdfIn PDF document text
    • http://copriyghtconfirmed.com/radijojcjpjf.pdfIn PDF document text
    • https://kamujepepafiga.weebly.com/uploads/1/3/0/7/130775209/4921903.pdfIn PDF document text
    • https://pukelubaluwo.weebly.com/uploads/1/3/4/7/134741361/metoka_sijekoterujobe.pdfIn PDF document text
    • https://cdn.sqhk.co/poxirowo/h9KAUrk/best_instagram_fonts_2020.pdfIn PDF document text
    • http://natural-shop.info/audacity_software_for_pc_freewh4jt.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://1cdd1dcb-54a5-4750-95ad-c4cce9a68cd1.filesusr.com/ugd/1e32c2_fba614fa9be3436bb055c6bf05b12370.pdf?index=trueIn PDF document text
    • https://cee4a208-09ac-40e0-983f-4c2cc776acbe.filesusr.com/ugd/5ed537_dd9038a392ee42fd84fcd0b03d33575e.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xefezesebusu/sig_sauer_p229_legion_compact_rx.pdfIn PDF document text
    • https://e966359d-176b-477a-9ad9-c314bea94227.filesusr.com/ugd/fa6f14_74662139728443bc8a047691d1e5725b.pdf?index=trueIn PDF document text
    • https://71a0d42b-91d5-4e94-9338-ff69ca8a624b.filesusr.com/ugd/e5d5e5_c19304abf90745c29b622b1844ff2cb1.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/sesafefanulokam/age_of_empires_1_soundtrack.pdfIn PDF document text
    • https://c1f973cf-d719-4acb-8f9e-cd83ae4fb94d.filesusr.com/ugd/057766_1fd81c37b07544798ec06ec573a34fc2.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tupofelasujewas/celine_dion_song_ashes_free.pdfIn PDF document text
    • https://44bb6ee8-a0fe-4f72-890f-0f0a2fec05cf.filesusr.com/ugd/b65acf_0829ad4fd921479685038e66315ff2f9.pdf?index=trueIn PDF document text
    • https://4b002d3c-a55f-42ce-816c-238f848e88a9.filesusr.com/ugd/3398cc_fc670a9e98744d19a572447230bc00bc.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wakuzidi/standard_safety_net_for_construction.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_off00013829.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13829 5068 bytes
SHA-256: 7f8d217c7d5f2661dd3b3265098032dc8e4fee66ba597c507b9b1384ad5a462b
font_01_sfnt_off00014998.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14998 12148 bytes
SHA-256: 409bb38e31acdb16774a50f5289c5c3d9706c63f5274176c371e8c177dceac02