Malicious PDF — malware analysis report

Static analysis result for SHA-256 4735304d3e59f479…

MALICIOUS

PDF

66.9 KB Created: 2021-02-27 02:57:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 3f030854a6fcf12264a3180b6f61bb1f SHA-1: a042ca7c1f4c4e460e9a60fe4d883b3a2cafaa5b SHA-256: 4735304d3e59f479c28b242e5891bb3199ff3719ddd8f468d9af8fda257da7ad
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://ponafet.ru/wix?keyword=stanley+garage+door+manual PDF link annotation
    • https://vedagerirujo.weebly.com/uploads/1/3/6/0/136055295/14f969a5bf1f2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423189/normal_60245f68be873.pdfIn PDF document text
    • https://tenogamux.weebly.com/uploads/1/3/2/6/132681545/wutijefewuxanapegu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413838/normal_601538e9e27be.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4492253/normal_60164491022d4.pdfIn PDF document text
    • https://wakejowedab.weebly.com/uploads/1/3/4/5/134599651/3cdcd6223f.pdfIn PDF document text
    • http://markettop.pro/88884713223wod3n.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495271/normal_5fdf2a89e93c1.pdfIn PDF document text
    • http://edalovert.xyz/38062072106840z0.pdfIn PDF document text
    • https://matatotasewitux.weebly.com/uploads/1/3/1/3/131384286/31f82ae287d96.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373997/normal_5ffb9eadbb4c4.pdfIn PDF document text
    • http://pollsexpert.com/nexaletozesen1tsb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xofenilar.epizy.com/61482008003.pdfIn PDF document text
    • https://s3.amazonaws.com/tokit/baillie_gifford_managed_b_acc_fact_sheet.pdfIn PDF document text
    • http://zuronixo.rf.gd/post_course_evaluation_form_template.pdfIn PDF document text
    • https://s3.amazonaws.com/peveziwoguxuzam/canonical_format_indicator.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_off0000cc52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC52 5172 bytes
SHA-256: 9a6327d2ce136603854b848d694ef88d6bce69c7fb4b4528f23ea4fce40ec739
font_01_sfnt_off0000ddd9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDD9 9640 bytes
SHA-256: 08e8ec55bd3aa38d35b51d19223da049bab31a1ed089829815629ade8de65e69