Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f334b53cdefdc0f…

MALICIOUS

PDF

80.3 KB Created: 2021-01-30 13:21:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 6d4caec10515ae2ea6ab42c2d76b8a8e SHA-1: dfe83d02fd4522d0c0fc7b8d814e3e08b38a7d31 SHA-256: 2f334b53cdefdc0f560838d993a70598c2aa26704156b775af86b2cdf12dd551
244 Risk Score

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://traffking.ru/wb?keyword=photo%20editor%20software%20reviews In PDF document text
    • https://tuledekubixa.weebly.com/uploads/1/3/4/7/134722649/b56513ab1.pdfIn PDF document text
    • http://yarrebitteh.online/michaels_cake_decorating_classes_rochester_ny89stz.pdfIn PDF document text
    • https://gimituwemowi.weebly.com/uploads/1/3/4/8/134872285/7bb59c57.pdfIn PDF document text
    • https://dunomomavelow.weebly.com/uploads/1/3/1/4/131407267/bd043fb.pdfIn PDF document text
    • https://zazokovorif.weebly.com/uploads/1/3/4/3/134321981/fedisewiwepi.pdfIn PDF document text
    • http://mainsale.pro/descargar_la_barca_sin_pescador_gratisdijy1.pdfIn PDF document text
    • http://help-copyrighteamservice.com/infectious_mononucleosis_rash_after_amoxicillin5z0av.pdfIn PDF document text
    • https://zuparimetusu.weebly.com/uploads/1/3/1/3/131378993/08b909d6.pdfIn PDF document text
    • https://tasimaxexakopox.weebly.com/uploads/1/3/2/6/132681882/wewewotale.pdfIn PDF document text
    • http://fruit-ital.space/21852421916s4zh1.pdfIn PDF document text
    • https://gosabejeda.weebly.com/uploads/1/3/1/4/131453015/4429de262.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jebufipip.epizy.com/solar_power_plant_project_report.pdfIn PDF document text
    • https://s3.amazonaws.com/tejuvonixag/bluebird_bukowski.pdfIn PDF document text
    • https://s3.amazonaws.com/dekogamik/understanding_building_automation_systems.pdfIn PDF document text
    • https://s3.amazonaws.com/bezorito/wowhead_affliction_warlock_pvp_guide.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_off0000ff85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF85 5116 bytes
SHA-256: d2abf4199347d68e76ffc4a7fa64c69a398b0e816ade6d0795f8241ccd693f96
font_01_sfnt_off000110ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x110FF 10440 bytes
SHA-256: 6c45ddab576bba097da07bcee1214b5563edc502073f3108756274c93c7462a9