Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9e764d64619fe8a…

MALICIOUS

PDF

69.2 KB Created: 2021-02-27 07:00:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 46f6fa342844bd5ad8509aa3b76e23ab SHA-1: 93d1bc50e66a4e893e9de07bbaea392294cdfee1 SHA-256: a9e764d64619fe8a6d6ccd47388a9b03390ad12fb7f3e5fd45beb17d25721687
126 Risk Score

Malware Insights

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

The PDF document contains numerous external URIs, many hosted on disposable domains, suggesting a link farm or phishing lure. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. The document body's reference to a 'Jensen jta-230 replacement needle' serves as a pretext to drive users to these malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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://nipisod.ru/award?keyword=jensen+jta-230+replacement+needle PDF link annotation
    • https://cdn.sqhk.co/sadopore/jdrBjyE/butaxivudofefujovometag.pdfIn PDF document text
    • http://fujigukatujewu.medianewsonline.com/kilijawiguwebirerakumemu.pdfIn PDF document text
    • http://linavaluviriv.getenjoyment.net/wetawewisitepe.pdfIn PDF document text
    • http://hhizmet.com/christchurch_earthquake_survival_storiesdke5n.pdfIn PDF document text
    • http://amsidgi.xyz/soleus_air_70_pint_dehumidifier_recallgf8l3.pdfIn PDF document text
    • http://fagumawegoleleb.mypressonline.com/husqvarna_chainsaw_455_rancher_chain_brake.pdfIn PDF document text
    • https://cdn.sqhk.co/fapolokid/wEifxjh/riptide_gp_renegade_review.pdfIn PDF document text
    • http://7gusevshop.space/grohe_thermostatic_shower_valve_temperature_adjustment9hakh.pdfIn PDF document text
    • https://cdn.sqhk.co/nizivatitogu/jDgghdJ/vatorawiporojemonak.pdfIn PDF document text
    • http://legalvictory.group/sony_ten_sports_live_tv_appzhihv.pdfIn PDF document text
    • https://cdn.sqhk.co/fujotojaxob/9ujjhiu/83461018607.pdfIn PDF document text
    • https://cdn.sqhk.co/tewisifupib/jhdZdVP/ditakefilukopifujefurone.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lizolubemerawi.epizy.com/what_is_contemplated_means.pdfIn PDF document text
    • http://dibulazovila.rf.gd/fivixebutav.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_off0000cf8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF8A 5752 bytes
SHA-256: 7fc7ef106a037f371ad7b3a74d8ab33c77fa70bed0e743652b6a12191632c02b
font_01_sfnt_off0000e30a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE30A 10428 bytes
SHA-256: bb53ec5fbc323833d27aaaa2d734a05793a8c167b027024c32882d112e485685

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