Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ab177685fb0c96b…

MALICIOUS

PDF

68.6 KB Created: 2021-02-12 20:46:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 603361c4d93519b3276382012a334c7c SHA-1: dec3052ffcb7c9038cfa0c553e6fcbc86dcf15ca SHA-256: 2ab177685fb0c96bedcc325319e5a0183ffc37ba65712fd3ad3d4c77e5c74ae5
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=how+to+install+disc+brake+caliper+guide+pin+boot+kit PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4381766/normal_5ff03b4daf65f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471985/normal_6006f9f1e6636.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410448/normal_5fe4d8e3ed970.pdfIn PDF document text
    • http://idealslimitaly-ufficiale.site/devoir_de_physique_chimie_seconde_suyjlwk.pdfIn PDF document text
    • https://votuwokikinoso.weebly.com/uploads/1/3/4/4/134466575/4157844.pdfIn PDF document text
    • https://kuzeloxowew.weebly.com/uploads/1/3/4/3/134330257/jomufisujoraguvok.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471996/normal_601b35cb304c4.pdfIn PDF document text
    • https://satizivuzaked.weebly.com/uploads/1/3/4/3/134383512/fekiwizavevogoton.pdfIn PDF document text
    • http://7lessons.space/ancient_mesopotamia_map_worksheetcr2yi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451927/normal_60026826c7ecf.pdfIn PDF document text
    • https://risegexof.weebly.com/uploads/1/3/4/6/134661868/rivewedaz.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/babuxufarizuxur/beautiful_natural_flowers_video.pdfIn PDF document text
    • https://s3.amazonaws.com/xilasisefi/fomojupajizozimezotusawu.pdfIn PDF document text
    • https://s3.amazonaws.com/dewutexorob/android_update_for_asus_zenfone_5z.pdfIn PDF document text
    • https://s3.amazonaws.com/mosezavor/sezonajenezopatigowapile.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_off0000d15f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD15F 5496 bytes
SHA-256: d49763cf85047d610ead6fc24b49eb4f1994a6ac16b263d6a8349691172c6a77
font_01_sfnt_off0000e428.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE428 9640 bytes
SHA-256: 653b4e43b59a9bf42739ce6400e489780eab68f5da9fa41fb44ff3126b0687aa