Malicious PDF — malware analysis report

Static analysis result for SHA-256 0964bda5d3603342…

MALICIOUS

PDF

74.5 KB Created: 2021-02-06 21:39:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 6568a2f93528236866a04a273fc9fb26 SHA-1: f54df092347460fede98d5f120f2e9aaa2a0ff3d SHA-256: 0964bda5d3603342c50b99dcc2db17942e2f3afdfd4a772137fc5602b5ce1825
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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/aws?utm_term=estrangeirismo+forma%25C3%25A7%25C3%25A3o+de+palavras PDF link annotation
    • https://bipovubukixepev.weebly.com/uploads/1/3/2/7/132740720/suwevejiruzawav-nijenon-xizaloge-robivudiwul.pdfIn PDF document text
    • https://cdn.sqhk.co/rekosiseweno/RbjjjjW/lebupikax.pdfIn PDF document text
    • https://cdn.sqhk.co/mirofifuba/obidLhc/24136302152.pdfIn PDF document text
    • https://cdn.sqhk.co/leperanurosi/q3jREjd/change_eye_color_permanently_usa.pdfIn PDF document text
    • https://dubobovutorikug.weebly.com/uploads/1/3/5/3/135332124/dc694fc.pdfIn PDF document text
    • https://jirogadipew.weebly.com/uploads/1/3/1/6/131606393/tanil.pdfIn PDF document text
    • https://cdn.sqhk.co/xebibugekux/heihhgY/celebrity_cruise_cancellation_policy_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/bomoxale/ib3gh3H/dosefedupudajuxad.pdfIn PDF document text
    • https://cdn.sqhk.co/wixumenez/fhb2jjY/capitalism_meaning_for_dummies.pdfIn PDF document text
    • https://cdn.sqhk.co/mekerijiwuv/DRvja6X/79359157517.pdfIn PDF document text
    • https://kasugokadudibuk.weebly.com/uploads/1/3/4/7/134740653/95e2f3cc977fdd.pdfIn PDF document text
    • https://cdn.sqhk.co/dutaxato/f8k6bfz/best_paintball_marker_2019_speedball.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378155/normal_6018bbcbbe863.pdfIn PDF document text
    • https://cdn.sqhk.co/dewobube/5mZ1GPM/2020.pdfIn PDF document text
    • https://rusipamisu.weebly.com/uploads/1/3/4/0/134017355/nubareronijaso.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000e0dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0DC 5880 bytes
SHA-256: 889673cbea2d7394c48416504ca058d21dee2d7601ae67b88e9bf683b8657054
font_01_sfnt_off0000f441.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF441 12712 bytes
SHA-256: 20f507805bd24a25e02d28635cb27c4c9be39d5de48dafec4161e633f9e3fb61