Malicious PDF — malware analysis report

Static analysis result for SHA-256 aadc17c908eedb05…

MALICIOUS

PDF

74.0 KB Created: 2021-02-21 00:18:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 10b54ed7590ced2baff0ea200068ff5b SHA-1: 7174f8c9f53774032b61c7256113e282e548dc9d SHA-256: aadc17c908eedb05a11c2ebde9c9667cd11265118344bb25c59b406cd409808d
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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.
  • 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://yafferge.ru/wix?keyword=audi+a4+user+manual In PDF document text
    • https://static.s123-cdn-static.com/uploads/4478398/normal_5fc84afa9c701.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490265/normal_6008115817dfe.pdfIn PDF document text
    • https://cdn.sqhk.co/retuwami/jhgif0N/febijotafobokesaxofa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421050/normal_5fd7cd8ad2a80.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368979/normal_5fe5063c80717.pdfIn PDF document text
    • https://cdn.sqhk.co/dajebala/LhiUKtV/46491573272.pdfIn PDF document text
    • https://cdn.sqhk.co/jadidawa/hCAdIni/nintendo_classic_mini_snes_wireless_controller.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378855/normal_600136cf5c3a9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412387/normal_601129dfea2e8.pdfIn PDF document text
    • http://teasmall.space/remove_adchoices_android_2017td3z3.pdfIn PDF document text
    • https://cdn.sqhk.co/pajokiman/gijjhHo/bipurip.pdfIn PDF document text
    • https://cdn.sqhk.co/nufesewepi/jejdhj5/magic_wand_amazon_toy.pdfIn PDF document text
    • https://cdn.sqhk.co/vufuvevu/hhieMjc/ants_go_marching_lyrics_and_chords.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tijopuzotozume.rf.gd/sizorigubulalaxiwamu.pdfIn PDF document text
    • http://mirokuf.rf.gd/pidire.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_off0000e6b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6B3 5048 bytes
SHA-256: c6cdd110abc237641d6729e541bcbd0c618308740d97fb528eb7fc446065fb9d
font_01_sfnt_off0000f7cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7CC 10500 bytes
SHA-256: 5cb00783e383a9b50115c9ed7bbf25fb6f8df9c45b92800d9cd2837a2c34fc22