Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a5d26eded0d4872…

MALICIOUS

PDF

75.5 KB Created: 2020-12-26 10:41:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 62222cdc7f10816937918ba87dcb24aa SHA-1: 2347e1adba9b5d7a2814ea518d1b0ae2f6dfcc29 SHA-256: 2a5d26eded0d487285df1ffac09312f6c6ec8fbbbd90f3a6fa967d3e553d68b3
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ggtraff.ru'. This URL is likely used to redirect the user to a malicious site for phishing or to download further malware. The ML classifier also strongly indicated maliciousness, and ClamAV detected it as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://ggtraff.ru/strik?utm_term=seven+letter+words+starting+with+air In PDF document text
    • https://cdn.sqhk.co/lasesekov/jj4Tmic/tippmann_paintball_gun_3d_model.pdfIn PDF document text
    • https://cdn.sqhk.co/momujolo/7MFhdyv/spin_the_wheel_game_show_2019.pdfIn PDF document text
    • https://cdn.sqhk.co/dibatafuba/0gdfdjf/18984655561.pdfIn PDF document text
    • https://cdn.sqhk.co/susiwozobo/hhWgdqo/round_rebounce_ball_hop_bowling_green.pdfIn PDF document text
    • https://kutobuxuvesoga.weebly.com/uploads/1/3/0/7/130740510/72be3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427780/normal_5fbf4b05b1128.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470703/normal_5fbbc803ef4e7.pdfIn PDF document text
    • https://cdn.sqhk.co/jumifokujuje/b9ijdhh/fanur.pdfIn PDF document text
    • https://cdn.sqhk.co/gugapedulob/Whdphhu/legion_of_ace_chaos_territory_characters.pdfIn PDF document text
    • https://cdn.sqhk.co/nupegefozub/h757jjb/73604519566.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/gorajikunobixi/crazy_horse_paris_show_video.pdfIn PDF document text
    • https://s3.amazonaws.com/bulalowisu/55029489448.pdfIn PDF document text
    • https://s3.amazonaws.com/xazarujokemus/10695140611.pdfIn PDF document text
    • https://s3.amazonaws.com/ganubatebedoxez/flight_of_the_bumblebee_violin_solo_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/pazovugal/centurias_de_nostradamus.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dd2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD2E 5128 bytes
SHA-256: 4e52d72120fc31b8c8c241376da366c66178c09a387f44f66c5836af4323da5e
font_01_sfnt_off0000eea3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEA3 10580 bytes
SHA-256: 565f7da5cb111279bbae72d880e54944e1ada1adf0b240128bee561bc1774ef1
font_02_sfnt_off000112a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x112A9 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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