Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8f5fad67d1b01b8…

MALICIOUS

PDF

66.0 KB Created: 2021-03-08 09:42:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 0bd9dbb295553ec02cc99a735f45152a SHA-1: f6cf31d26a09c51200bdfbc4f990044a54d9dbbf SHA-256: d8f5fad67d1b01b8f09abcbf5a2b3c245da40d9ec04660daf8f2e92f97c20991
166 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
  • Image-heavy PDF with invisible link to suspicious domain high PDF_SUSPICIOUS_LINK_LURE
    PDF is a small image-heavy lure with invisible link annotations that send the user to a suspicious high-risk-domain URI. This matches credential-phishing carriers where the visible document is only a prompt and the real collection flow happens on the linked website.
  • 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://pelibifir.ru/award?keyword=programming+clicker+keypad+garage+door+opener PDF link annotation
    • http://temilops.xyz/85324477073wngvl.pdfIn PDF document text
    • https://cdn.sqhk.co/tiwefuxab/LVjh7Zt/rebumobipusegenore.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453332/normal_603eceb2d1eb8.pdfIn PDF document text
    • https://cdn.sqhk.co/poniroxam/muIaiii/gakolukigep.pdfIn PDF document text
    • http://securitycheckingbrowservkcom.xyz/ludo_king_hack_controller_apk_download9s448.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386830/normal_5fca3b0d53f7e.pdfIn PDF document text
    • http://axacheat4.xyz/what_is_nasdaq_100mbstz.pdfIn PDF document text
    • http://prizinsta365.site/samsung_hw-hm45c_remotetyrsd.pdfIn PDF document text
    • http://fly-drive.online/53206000003eb5w3.pdfIn PDF document text
    • http://afracheat6.xyz/lego_neighborhood_book_221nqj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424981/normal_5fd17efcbf8fe.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/donarepemi/tamilrockers_2016_movies_tamil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4b31e98b-7000-4fd2-8b80-f39353924c27/how_to_turn_on_sportdog_shock_collar.pdfIn PDF document text
    • https://s3.amazonaws.com/wofaxil/android_9_update_for_oppo_f9.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1dfe750b-49d1-497c-9e90-0f051248fa8e/what_is_a_good_dutch_oven_recipes_le_creuset.pdfIn PDF document text
    • https://s3.amazonaws.com/suxugipipolazog/orbit_er_chrome_indir.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0893566f-8efc-4e32-839f-2aab9489d2a4/84744243474.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_off0000c6fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC6FA 5384 bytes
SHA-256: 6d9a27fb0ecd1b9fd61854b2707cf9fc90ac17a72b33d4f0743ee755a8d80926
font_01_sfnt_off0000d93c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD93C 9848 bytes
SHA-256: 12637203d1feab530ad3c15b5f1b79ee7fadb8e884a155c87f5f62dbd5043d87