Malicious PDF — malware analysis report

Static analysis result for SHA-256 96bfb0d74b4b4ea1…

MALICIOUS

PDF

68.0 KB Created: 2021-02-13 08:56:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 698cf5fafc5fe10df7667e830dd9fff6 SHA-1: 65603097c20f9fe7c0004a3af7edb3448ac0874b SHA-256: 96bfb0d74b4b4ea18e5ca4cdf906faa25dffe47bdba7f627af04c525788ada0c
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://jottigo.ru/wix?keyword=jackson+ms+comcast+channel+guide PDF link annotation
    • http://freds.space/kivilelabodoxobevoaztgo.pdfIn PDF document text
    • http://naturka.space/51691850078qqfzo.pdfIn PDF document text
    • http://finansi-7.online/ravesulonedixapufimohpco.pdfIn PDF document text
    • http://profer-opt.ru/bts_albums_freeenufq.pdfIn PDF document text
    • https://sitixibabu.weebly.com/uploads/1/3/4/7/134749551/6852066.pdfIn PDF document text
    • https://cdn.sqhk.co/viwiratoposu/aM6oVhg/rizeja.pdfIn PDF document text
    • https://vemesefopega.weebly.com/uploads/1/3/4/6/134684253/c09eba3a32.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/rorives/alter_ego_5_cahier_d_exercices.pdfIn PDF document text
    • https://s3.amazonaws.com/gumagabu/21453083664.pdfIn PDF document text
    • http://turolikuzadera.epizy.com/40172728915.pdfIn PDF document text
    • https://s3.amazonaws.com/nafibanefexex/momevokodisisanaje.pdfIn PDF document text
    • https://s3.amazonaws.com/tuzamada/365_technical_writing_tips.pdfIn PDF document text
    • https://s3.amazonaws.com/tudawufed/86665745007.pdfIn PDF document text
    • http://wetowotupime.rf.gd/92957964405.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_off0000ce63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE63 5308 bytes
SHA-256: f0949475ca9d426788996922b1a0f8f8ef23dd9ef25c1180b3ffb44380ec5305
font_01_sfnt_off0000e052.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE052 10204 bytes
SHA-256: c259870b8cc5ffcf8672aa23c051716d85f9047e901810f6bd8308ad1d5fd9da