Malicious PDF — malware analysis report

Static analysis result for SHA-256 88f06190fc3bb917…

MALICIOUS

PDF

69.0 KB Created: 2021-02-13 03:51:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 81a867184598914a7915e85a98d7a394 SHA-1: 065d2a2c5a6614d4eb5b2e0ff29ca0781bdb491a SHA-256: 88f06190fc3bb9174a70cb3d38ccadb187fe06e631a490c699bdd5d6967cf957
196 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
  • 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.
  • 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://bologen.ru/wix?keyword=hack+apk+all+games PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4380219/normal_5fc6484fbd32b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490366/normal_5fcb35e00bf43.pdfIn PDF document text
    • https://semanipiji.weebly.com/uploads/1/3/5/3/135312460/nozikem_sudulo_zeselimim.pdfIn PDF document text
    • http://comforfemj.fun/asurion_verizon_affidavit_formhz02d.pdfIn PDF document text
    • https://cdn.sqhk.co/dewobube/eibeWzv/74794487635.pdfIn PDF document text
    • https://litukepulaj.weebly.com/uploads/1/3/4/8/134863372/4025721.pdfIn PDF document text
    • https://zugowexilib.weebly.com/uploads/1/3/5/3/135349829/6638083.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421036/normal_5fdca45b383d5.pdfIn PDF document text
    • https://kiwaluraxipexe.weebly.com/uploads/1/3/5/3/135326690/49bb368e9fef8d3.pdfIn PDF document text
    • https://cdn.sqhk.co/xawobovuji/wDBpnie/carpentry_college_near_me.pdfIn PDF document text
    • https://cdn.sqhk.co/borefigux/Nhh2jim/wuvofokeverez.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471484/normal_5ffa22d677939.pdfIn PDF document text
    • http://sirovikokaxi.22web.org/dslr_controller_apk_for_nikon.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486963/normal_5ffa0f39648f3.pdfIn PDF document text
    • https://cdn.sqhk.co/livisade/bjY0NjK/eldar_mamedov_jena.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/jevelel/76205629477.pdfIn PDF document text
    • http://wixufoliwesomep.epizy.com/nevinokojadaxikog.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_off0000d33d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD33D 5184 bytes
SHA-256: dddb9ed1f0376790070b8292f1927b8097026cf667eb2953b09bd3dd376af604
font_01_sfnt_off0000e4d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4D8 10136 bytes
SHA-256: f72293eda96564ae9450ab1d2a82e1f0070d090efd3c576f0116e1a1a7e36c8d