Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a7d455f2eb4aeb9…

MALICIOUS

PDF

69.6 KB Created: 2021-01-24 07:50:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: be516f79a8459439e4f3aa37fe017e8d SHA-1: edd2f0338efade7da611f7288f944f512da9c93a SHA-256: 2a7d455f2eb4aeb9c6890f5f75383beb69c21c8fb53dae2822e2448d5c599c50
196 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
  • 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://trafffi.ru/wb?keyword=snes%20classic%20gamestop PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4500453/normal_5fc8d5dfd85fb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467573/normal_600cd02dd07bf.pdfIn PDF document text
    • https://sibezabivodigif.weebly.com/uploads/1/3/1/4/131407310/39cbc8eab.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484814/normal_60031d26a466e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407085/normal_600398613f1c4.pdfIn PDF document text
    • https://tojaluteder.weebly.com/uploads/1/3/4/3/134384479/7046302.pdfIn PDF document text
    • https://piziwola.weebly.com/uploads/1/3/1/3/131382430/tebeneretol_deviti_riboxalapiji.pdfIn PDF document text
    • https://mejotowud.weebly.com/uploads/1/3/0/9/130969644/sodejamevomor-nixovojuvin-tewiwavore-perazatunike.pdfIn PDF document text
    • https://mapobosani.weebly.com/uploads/1/3/4/3/134385232/5839532.pdfIn PDF document text
    • https://finiruxadaral.weebly.com/uploads/1/3/2/6/132680938/bupitu_kizujozeto_suxitovutivor.pdfIn PDF document text
    • https://pakurematumomu.weebly.com/uploads/1/3/4/7/134764434/pemabadekekurigu.pdfIn PDF document text
    • https://rudunusom.weebly.com/uploads/1/3/4/6/134602981/jafagamo.pdfIn PDF document text
    • https://cdn.sqhk.co/dusivubeleza/gicrUgf/sky_whale_game_free_online.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/takebemanijewok/js-_xlsx_json_to_sheet_example.pdfIn PDF document text
    • https://s3.amazonaws.com/leteraxewe/pokejupogodoniribu.pdfIn PDF document text
    • https://s3.amazonaws.com/kewakuko/kajozujosajagutuponano.pdfIn PDF document text
    • https://s3.amazonaws.com/begijufadi/siteorigin_page_builder_create_templates.pdfIn PDF document text
    • https://s3.amazonaws.com/legipalofi/jovenogut.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_off0000d32c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD32C 5260 bytes
SHA-256: 406c829a56b8b0467cf0ecd66624e1ca4f28debbdada13d1f1db40deca36db7c
font_01_sfnt_off0000e505.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE505 10664 bytes
SHA-256: 2ecc4a4727bfe822ee0acc884d7480601a5fcfe726322e92bc7d1faf77d7b18d