Malicious PDF — malware analysis report

Static analysis result for SHA-256 645992695e82f2b2…

MALICIOUS

PDF

61.8 KB Created: 2021-02-04 11:47:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 86c3caea2101424e350726bf3e4b3572 SHA-1: ad0918013857146bf8c597f73dc5c82163dadcc0 SHA-256: 645992695e82f2b2ebedf2a3cf77c743d404d2622330f5abea920646ae789c04
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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 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://baarspo.ru/wb?keyword=free%20%20wande%20coal%20bumper%20to%20bumper PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4370547/normal_600cdde2abcba.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444630/normal_5fd8def65b5fa.pdfIn PDF document text
    • https://cdn.sqhk.co/fofodafexadu/hjhchat/is_it_possible_to_remove_curse_of_binding.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490516/normal_5fe18aa1372d6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425909/normal_6008c6331ba25.pdfIn PDF document text
    • https://cdn.sqhk.co/zaniridut/8hahjoo/how_to_get_ringtones_for_iphone_xr_free.pdfIn PDF document text
    • https://cdn.sqhk.co/xakurusuk/oicAv4K/water_ring_toss_3d_puzzle_game.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407749/normal_5ff4c0ee3f570.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382201/normal_5fdf9890433f5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374976/normal_5fd8cca2256a8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380705/normal_5fce38a50b3e0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410731/normal_5fcab73df03e4.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/jewizopukuni/bowflex_treadclimber_3000_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/lolaritemukole/fegatoximexibiteguj.pdfIn PDF document text
    • https://s3.amazonaws.com/jarawaxanivu/assassin_s_creed_revelations_game_informer_review.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_off0000b4eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB4EB 5228 bytes
SHA-256: 4b86c2e3e678907410b21adea54400b58c77003734499ebad53e708c6980e039
font_01_sfnt_off0000c6ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC6AE 10640 bytes
SHA-256: 494051e9513d347a5d741ee996e46d488dd275c077af88bdfd0a7f90387521f0