Malicious PDF — malware analysis report

Static analysis result for SHA-256 60ebeb455438e16d…

MALICIOUS

PDF

74.6 KB Created: 2021-04-03 17:27:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: e4a462bcef4a27f18679c6cd7748a543 SHA-1: 2ab6840f987ef2463905435f410c7aa2f0f466f7 SHA-256: 60ebeb455438e16d500bfcefe17e1249298d089d747cc824eff45615f5d32a1c
186 Risk Score

Malware Insights

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

The PDF contains a large number of external links pointing to various PDF files hosted on disposable domains, indicating a link farm or SEO spam operation. The ClamAV detection and ML classifier strongly suggest malicious intent, likely phishing or malware distribution. While no scripts were explicitly extracted, the nature of the link farm and the 'Pdf.Phishing.Trojan' detection points towards a malicious document designed to redirect users to harmful content.

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://jacksth.ru/strik?utm_term=how+to+check+power+supply+on+hp+switch PDF link annotation
    • http://pasetbs.xyz/84051321122bh6i1.pdfIn PDF document text
    • https://cdn.sqhk.co/xavaxonad/MFSWgic/88552958916.pdfIn PDF document text
    • http://idealica-ufficiale.site/guxumobelanok5eav2.pdfIn PDF document text
    • https://cdn.sqhk.co/remozemot/PkDieij/ac_repair_for_my_car_near_me.pdfIn PDF document text
    • https://cdn.sqhk.co/jovakuki/eIidhev/dispute_validity_of_debt_letter_template.pdfIn PDF document text
    • https://wavasifowimuzog.weebly.com/uploads/1/3/5/3/135321241/kadiverovafes.pdfIn PDF document text
    • https://cdn.sqhk.co/xanapaje/togdicR/cucumber_slices_cartoon.pdfIn PDF document text
    • http://heleogose.online/what_kind_of_charger_does_a_jbl_flip_5_usetyn96.pdfIn PDF document text
    • http://fridgeservice.ru/contoh_report_internship_uitmsqg6e.pdfIn PDF document text
    • http://wirelessinfo.ru/gupewexuxojamanamezixeb55y37.pdfIn PDF document text
    • http://drovazvenigorod.ru/62966146646lwiws.pdfIn PDF document text
    • http://milanbeachs.space/a._o._b_full_formato4k.pdfIn PDF document text
    • https://janolonixo.weebly.com/uploads/1/3/3/9/133987325/warodat-jibugolap.pdfIn PDF document text
    • http://smartcreditscore.info/matlab_circuit_analysisfrs1v.pdfIn PDF document text
    • http://slimitalia.space/understanding_movies_14th_edition_ebookyq6ka.pdfIn PDF document text
    • https://vodexekuteb.weebly.com/uploads/1/3/0/7/130776001/1608102.pdfIn PDF document text
    • https://cdn.sqhk.co/nulusezitelo/ojhgejb/amc_job_pay.pdfIn PDF document text
    • https://vukuwapebu.weebly.com/uploads/1/3/5/3/135310377/3290589.pdfIn PDF document text
    • http://mignonette.space/dead_by_daylight_steam_sizeojeeo.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_off0000e572.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE572 5028 bytes
SHA-256: 7acfcefc7fc3877a7cda7f3bb4d69eb9000a06343888c0ed5b1e5737faabc2b5
font_01_sfnt_off0000f69e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF69E 11284 bytes
SHA-256: 2012abe0c9c0cf4caf6ac6717d927f113d97952911662afb0210e5e3dec38707

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