Malicious PDF — malware analysis report

Static analysis result for SHA-256 41bbe7edead1ca6f…

MALICIOUS

PDF

74.0 KB Created: 2021-03-08 00:08:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 1cdb4cd25fb20532dc2961c054f96d30 SHA-1: 2ebbdd638b93965a434a264fbce8f9413fce558a SHA-256: 41bbe7edead1ca6f840a84e394b6381defe74c12308b3863f9f82e0597cf2925
186 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.
  • 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=afghanistan+romeo+and+juliet+answer+key PDF link annotation
    • http://folivapizi.66ghz.com/app_to_annotate_online.pdfIn PDF document text
    • https://nusutaligufobam.weebly.com/uploads/1/3/5/3/135393176/3483523.pdfIn PDF document text
    • https://temerineg.weebly.com/uploads/1/3/0/9/130969052/rurofagedubefi.pdfIn PDF document text
    • https://tenosufude.weebly.com/uploads/1/3/1/4/131455069/pepokadipolidefutefu.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/sitozi/nisokapoj.pdfIn PDF document text
    • https://c809e8a6-5bdf-489d-8d8c-df4e4638a115.filesusr.com/ugd/45a296_5f046bd99ccc43a682b9695781df1750.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xupovobejanam/what_are_three_most_common_research_methods_used_in_social_psychology.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4cd54ec9-7948-4eae-8b43-21d8081c0853/gexofapuf.pdfIn PDF document text
    • https://f6b99bba-f064-431f-ab68-6eacb91b2703.filesusr.com/ugd/35e1ce_962dd7fb1f524320b9aaa25b9bdd8388.pdf?index=trueIn PDF document text
    • https://a161ff94-1a6f-4367-b6f8-8e513a5e676d.filesusr.com/ugd/4c7633_c4bd721622cb4d25b5c18f7686e1d75a.pdf?index=trueIn PDF document text
    • https://18b62485-dce0-4e35-9712-b1d1f13fcb23.filesusr.com/ugd/296484_3359b1642aae49ef843a13ecc0cf7773.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/a41463b6-f32d-4836-9b6a-d7b4e2d95fd0/kinetico_water_softener_system_maintenance.pdfIn PDF document text
    • https://0503187d-52cd-4237-9521-a3cb9bf551ae.filesusr.com/ugd/5bb01c_1ce626e21f3142ce98f40990fb80e294.pdf?index=trueIn PDF document text
    • https://550dfcec-0280-4316-a0d5-68b74a7a20b9.filesusr.com/ugd/f59309_123d42dddf0e4b97aef8af3ad960a862.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/libosokune/vintage_boy_scout_uniform_pants.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d9582fc8-6387-484a-88d7-0cea05c703f0/best_romeo_and_juliet_quotes_about_love.pdfIn PDF document text
    • http://labotiz.rf.gd/88750326224.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cdadb9de-cbc9-4d49-b4ab-70a2335475a8/tokyo_ghoul_re_season_1_list_of_episodes.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_off0000e3ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3CA 5644 bytes
SHA-256: b03ea8492f36b3a7eff81e4d291010cdf8ce732594c399ab32a772ae3d6eb5fb
font_01_sfnt_off0000f6f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6F7 10440 bytes
SHA-256: 5b0e8c25c5765ce45e9ba88f8e1dad83d6ad034ecc0a3db559dffa7f1cf4b26c