Malicious PDF — malware analysis report

Static analysis result for SHA-256 e92bef2c742bda6f…

MALICIOUS

PDF

66.3 KB Created: 2021-02-09 20:47:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 9557460251940089ac7bf9f75aec05d9 SHA-1: 795d0687e53080a1ee9a039f789417207f65d9fe SHA-256: e92bef2c742bda6f7d45fb6400fff28cf158fa99e502243c3c57fd5fd256bf8c
134 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The presence of numerous external URLs, including those hosted on disposable domains and link farms, suggests a phishing or malware distribution campaign. The heuristic 'SE_DOWNLOAD_BUTTON' further supports the idea that the document is designed to trick the user into downloading something.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://bologen.ru/wb?keyword=ielts%20listening%20actual%20test%20vol%201%20pdf PDF link annotation
    • https://cdn.sqhk.co/mipekakiri/ge2D3hi/texas_longhorns_women_s_basketball_recruiting_2019.pdfIn PDF document text
    • https://cdn.sqhk.co/kepebeso/ZWTBigi/33440710101.pdfIn PDF document text
    • http://yognat.space/83712318065izzde.pdfIn PDF document text
    • http://getcreditreport.info/19276658372a2k9r.pdfIn PDF document text
    • http://cosmostil.top/the_culture_code_coyle_reviewrcelj.pdfIn PDF document text
    • https://cdn.sqhk.co/delinilipo/hbjhxgj/71199642471.pdfIn PDF document text
    • https://cdn.sqhk.co/xixujipum/Khhjhgi/english_pool_table_pocket_size.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426407/normal_601de0523e198.pdfIn PDF document text
    • https://cdn.sqhk.co/zikonidenijo/c6kyic6/58397311382.pdfIn PDF document text
    • https://cdn.sqhk.co/duwokarewesu/ifW7emE/super_dancer_2020_start_date.pdfIn PDF document text
    • http://shimano-stradic.ru/57902492617lz1s6.pdfIn PDF document text
    • https://cdn.sqhk.co/texekikevow/XKzTxln/call_espn_plus_customer_service_phone_number.pdfIn PDF document text
    • http://experiment.website/facebook_marketplace_local_cars_trucksdttcm.pdfIn PDF document text
    • https://cdn.sqhk.co/wabajevebe/ieijCjh/draw_lines_of_symmetry_for_these_designs.pdfIn PDF document text
    • http://9gusevshop.space/akabur_witch_trainer_cheatsi3ep7.pdfIn PDF document text
    • https://cdn.sqhk.co/lopokevofoti/ichfBjj/woxunozatitesem.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489977/normal_5fdd3201ae46e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000c642.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC642 5276 bytes
SHA-256: cd5f7694255c23365a0260f13fd401e2dbc755d7aca1521382c3892f403e2276
font_01_sfnt_off0000d860.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD860 10484 bytes
SHA-256: 50bfe37f431f3e6e41aa2ef3eb8f4c77fdf55e17c5cdfe1a994f420f1301f5bc

Open this report in the interactive analyzer, or submit your own file for analysis.