Malicious PDF — malware analysis report

Static analysis result for SHA-256 01b7e648479f498c…

MALICIOUS

PDF

74.6 KB Created: 2020-11-21 13:43:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: e72d60b459168f092639abd0521cec83 SHA-1: 4e47ea59b83ff4f7a77ed58889be742452c6cdf1 SHA-256: 01b7e648479f498c3b028ed3c00ae5a21df5a4d8be8706e2bfe775eeb5722f98
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://traffset.ru/aws?utm_term=aldi+bread+machine+manual PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4369786/normal_5f8e88b2b7ce3.pdfIn PDF document text
    • https://zalopajozi.weebly.com/uploads/1/3/1/4/131453352/57001e08.pdfIn PDF document text
    • https://zofomuwane.weebly.com/uploads/1/3/4/0/134040850/8655984.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384029/normal_5f9b7530df2c1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413973/normal_5fb48afd21143.pdfIn PDF document text
    • https://ririrufazerox.weebly.com/uploads/1/3/4/5/134501654/terivilof-wunalolelupena-korekenerobi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369329/normal_5f9a43b3e4f03.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410207/normal_5f9e409d3a838.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393901/normal_5f9fb2528808e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379732/normal_5fb882a17c58e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/zesotat/diego_luna_kids.pdfIn PDF document text
    • https://s3.amazonaws.com/mexesazaxasa/tuxedidegebasarotavu.pdfIn PDF document text
    • https://s3.amazonaws.com/tesodagiwor/clarion_vx400_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/jimugivos/tajekixawibun.pdfIn PDF document text
    • https://s3.amazonaws.com/jemazejodep/89982379198.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dc71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC71 4820 bytes
SHA-256: fee3af945bcae6f9b3d43d0c2491a45995fc9efef52280a848f1a06e05da64c9
font_01_sfnt_off0000ec8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC8E 10152 bytes
SHA-256: 3b5703e084c169dd8fd4cc29f7d2cbba6bec2f416169c458164b2357ca529de1
font_02_sfnt_off00010f44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F44 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c