Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a64743b22e45150…

MALICIOUS

PDF

68.2 KB Created: 2021-02-24 03:02:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 42c3988facbd318f582fd9166174e24d SHA-1: 3a324c90303699d04277101e00c2a2f336647588 SHA-256: 3a64743b22e45150a82956358a4c0063e06619e8caa3b52c89c3f0ee1748c336
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 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://yafferge.ru/wix?keyword=doorking+1601+manual In PDF document text
    • http://logvoz.ru/wezidogomoribobodzkhe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4462339/normal_5fe133175d3e8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404124/normal_60238fd611acb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402944/normal_5fd36a10f4084.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403141/normal_602bb0fcc752d.pdfIn PDF document text
    • http://xviiivbgz.com/what_is_the_starting_pay_at_mcdonalds_20208w5qh.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469623/normal_601262ff5ccd9.pdfIn PDF document text
    • http://natur-bio.space/10_best_swing_trading_patterns_and_strategiesszg7f.pdfIn PDF document text
    • http://tugrull.com/750640807973xkva.pdfIn PDF document text
    • http://probkin34.xyz/asme_b31._8_download1i9tn.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4467576/normal_5feafe9087f80.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459058/normal_5fcd9d75495f2.pdfIn PDF document text
    • http://khareedforosh.com/disco_ball_zoom_background_free147fj.pdfIn PDF document text
    • http://trixy-matrix.space/south_african_hip_hop_instrumentals6vx77.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393034/normal_6015accfb9bc2.pdfIn PDF document text
    • http://kneeksi.ru/rodedutapunukevuzavavaa6c30.pdfIn PDF document text
    • http://tiktokfrance.fun/1626646939yatdu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/vuterijoze/beard_shaping_styling_template.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_off0000cf63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF63 5236 bytes
SHA-256: 5d209adce9d150343a26944f357894bc580ef4423e2ff67e951e7aab82c1cecc
font_01_sfnt_off0000e12a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE12A 10236 bytes
SHA-256: b961f199a412d5694ad44768060ac82dae4b15d10ccc945682faffd1864a70e0

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