Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d439f6008d83c5f…

MALICIOUS

PDF

70.2 KB Created: 2021-02-22 16:46:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 34f9d3361fc5f309961c152a8dd54838 SHA-1: 03c15f2e619717b6474509333f924bfb15555b39 SHA-256: 0d439f6008d83c5f5c1523e85341e68b3a78c2610d7bdab89927457693584f8b
196 Risk Score

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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://leonvi.ru/wix?keyword=penn+state+abington+bus+schedule PDF link annotation
    • https://cdn.sqhk.co/gabixeme/giihjPC/hasbro_furreal_friends_starlily_my_magical_unicorn.pdfIn PDF document text
    • https://ginugifugebiner.weebly.com/uploads/1/3/4/2/134234672/9b3704e6.pdfIn PDF document text
    • https://cdn.sqhk.co/xovinexesun/jigj1vv/school_days_hq_gameplay.pdfIn PDF document text
    • https://cdn.sqhk.co/mixaluwekitu/jikJghG/xupevapod.pdfIn PDF document text
    • https://losewilim.weebly.com/uploads/1/3/4/8/134854933/e0681.pdfIn PDF document text
    • https://cdn.sqhk.co/zavipudajose/ahhzWhe/mad_skills_bmx_2_pc.pdfIn PDF document text
    • https://cdn.sqhk.co/ferobisuw/iulgghg/jubuzirozegin.pdfIn PDF document text
    • https://cdn.sqhk.co/pategazikiw/iafidhj/53378430629.pdfIn PDF document text
    • https://xuleminemixek.weebly.com/uploads/1/3/5/3/135333740/a5c81.pdfIn PDF document text
    • https://wumifidadorubip.weebly.com/uploads/1/3/5/2/135298964/59fdb86afdd63cb.pdfIn PDF document text
    • https://cdn.sqhk.co/nobixapo/igigxhe/22402717970.pdfIn PDF document text
    • https://tosoremekik.weebly.com/uploads/1/3/4/7/134771766/20d70864a8.pdfIn PDF document text
    • https://cdn.sqhk.co/soxoxefumuv/1dIN3hY/vitrin_irancell_code_charge_maker.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/nefunupu/aes_export_information_code.pdfIn PDF document text
    • https://s3.amazonaws.com/lorugipopuxe/what_is_a_neon_santa_dog_worth_in_adopt_me.pdfIn PDF document text
    • https://s3.amazonaws.com/buganabowumujef/bangalore_days_songs_kuttyweb.pdfIn PDF document text
    • https://s3.amazonaws.com/napejaxosinages/dudobipojinejixowaxeb.pdfIn PDF document text
    • https://s3.amazonaws.com/fedufiporara/pwm_pulse_width_modulation.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_off0000d8b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8B6 5248 bytes
SHA-256: a6d8d025f00b765980dae8795651f81bff6b75f03ef2a8cce783153b4954855a
font_01_sfnt_off0000ea8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA8B 9780 bytes
SHA-256: 8a0a8fda43d33f366388da8ee2d6dfc7f1bd48a2a2d4a3ab028d1e0f2027672a

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