Malicious PDF — malware analysis report

Static analysis result for SHA-256 cabaed353993feed…

MALICIOUS

PDF

69.3 KB Created: 2021-01-09 17:02:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2022-07-02
MD5: 06de18d19a50a9bad7cf303ebaaba5e4 SHA-1: a897adc35276ff381fe53dcba141dd47db862ec5 SHA-256: cabaed353993feed405901f9e9dfdcb53b2bc52a08a6620fb02904a4ddb7bb02
254 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
  • 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.
  • 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.
  • 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/123?utm_term=christensen+competing+against+luck+pdf In PDF document text
    • https://cdn.sqhk.co/gufezitaxato/hTLhbFX/sushi_roll_roll_roll_menu.pdfIn PDF document text
    • https://ramakizuwag.weebly.com/uploads/1/3/4/3/134321509/7408384.pdfIn PDF document text
    • https://cdn.sqhk.co/daxegajok/g0gd9if/music_theory_for_dummies_review.pdfIn PDF document text
    • https://cdn.sqhk.co/favejofu/jcggUhd/gomeruwagez.pdfIn PDF document text
    • https://sokuvotaboraj.weebly.com/uploads/1/3/0/7/130776263/5590407.pdfIn PDF document text
    • https://cdn.sqhk.co/tarozawowe/fidgdjh/buddy_toss_apk_mod_hack.pdfIn PDF document text
    • https://cdn.sqhk.co/lazujanaziri/hden3HI/77549883956.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/satedafadusizo/ninujejalu.pdfIn PDF document text
    • https://s3.amazonaws.com/vufupu/ged_study_guide_in_spanish.pdfIn PDF document text
    • https://s3.amazonaws.com/bajuse/facebook_messenger_audio_file.pdfIn PDF document text
    • https://s3.amazonaws.com/bevarolimesale/answer_me_n_french.pdfIn PDF document text
    • https://s3.amazonaws.com/towakog/92155034694.pdfIn PDF document text
    • https://s3.amazonaws.com/sikuva/60293158221.pdfIn PDF document text
    • https://s3.amazonaws.com/ritoma/cinderella_man_real.pdfIn PDF document text
    • https://s3.amazonaws.com/retobifulipo/fifa_20_coin_generator_no_human_verification_or_survey.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_off0000d0f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0F1 5536 bytes
SHA-256: d846dc186c99e1ec72d600104f0b71b6c64dddf82cac3d23985e79f8ea61528d
font_01_sfnt_off0000e398.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE398 10888 bytes
SHA-256: 4d6ac7fe8f59788483a2629a838bdd6e1b80570fc494bea3bec88be2ff31decc

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