Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab0862b089e212aa…

MALICIOUS

PDF

68.0 KB Created: 2021-02-18 06:54:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: f51434f808082e016711e1ea3da220bb SHA-1: 2b5e57a8c8ee5e7598c5e04fc3d3e9057719b246 SHA-256: ab0862b089e212aaa359b6e025ed6b62f8c4d19f20f9a3e6b2f0f89a7a477b74
186 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as a link farm and by a machine learning classifier as malicious. It contains numerous external links, including one to 'druttle.ru' and another to 'tifizifojaf.iblogger.org', suggesting a phishing or SEO spamming campaign. The ClamAV detection further supports its malicious nature, identifying it as 'Pdf.Phishing.Trojan'. No scripts were extracted, but the PDF structure itself is used to host and distribute these malicious links.

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 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://druttle.ru/strik?utm_term=intellicharger+i2+blinking+yellow+light PDF link annotation
    • http://tifizifojaf.iblogger.org/91032462656.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495976/normal_5fe245b3038ec.pdfIn PDF document text
    • https://cdn.sqhk.co/nupopobax/XHifQif/jamopegifamom.pdfIn PDF document text
    • https://cdn.sqhk.co/gupetipek/bugisag/waze_sur_apple_watch.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402014/normal_5fcd79de8bca7.pdfIn PDF document text
    • https://cdn.sqhk.co/wimiwupo/gjkhhhg/setilavakobijitawox.pdfIn PDF document text
    • http://wumalazari.22web.org/cigar_box_guitar_building_guide.pdfIn PDF document text
    • https://cdn.sqhk.co/jonuwezipagi/hgjciXe/mofesawof.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449618/normal_60005c7a6d9ad.pdfIn PDF document text
    • http://lerawutevokaj.iblogger.org/artstudio_pro_android.pdfIn PDF document text
    • https://cdn.sqhk.co/remonupode/hicrxKf/guide_for_pk_xd_2020_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/lizuxutagisu/hfCRheO/jipikasodereboke.pdfIn PDF document text
    • https://cdn.sqhk.co/kamupudoro/2pvgcWE/download_game_giant_io_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/mepapogivoma/lwigQH6/gufovubub.pdfIn PDF document text
    • https://kutebebi.weebly.com/uploads/1/3/4/5/134528954/61357bf71d5dc80.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479718/normal_602af996e8074.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vasikiga.epizy.com/deepak_chopra_daughter_married.pdfIn PDF document text
    • http://fipiwafupogo.epizy.com/11135564764.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_off0000cb21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB21 5348 bytes
SHA-256: 34e27a0ee8186d8e637ac6b542e2815e3f803612cfe7d80a209970a0172149a3
font_01_sfnt_off0000dd68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD68 11056 bytes
SHA-256: c1af611024ec78a9153301fc73eef89a20ed6484383e7b94af698947061c079c

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