Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c2ccb6ef723a411…

MALICIOUS

PDF

70.0 KB Created: 2020-12-07 00:10:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 2290026659a8b20b7aec3a59de0443b9 SHA-1: 1b895dc3af39ac08b00b7a12ffa4cdea85cbd0e5 SHA-256: 9c2ccb6ef723a411d6017f32b052f1b730d7ed6d88a8573108467942ff4570c6
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains numerous external links, many pointing to disposable hosting services, indicating a link farm designed to redirect users to potentially malicious content. The presence of a sensationalized headline in the document body further supports a phishing or malware distribution lure. ClamAV and ML classifiers also flagged this PDF as malicious, specifically as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://trafffe.ru/123?utm_term=wife+reads+affair+texts+instead+of+vows+at+wedding PDF link annotation
    • https://nazizuvadonilu.weebly.com/uploads/1/3/4/5/134590702/zuwuxojaturokogo.pdfIn PDF document text
    • https://vufupobuzalezu.weebly.com/uploads/1/3/4/8/134853030/vasujokaro_bosojiv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378160/normal_5f9a620d19e4d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384039/normal_5fc4945a6c33b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390641/normal_5f9c0642ed669.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4491946/normal_5fcd554575470.pdfIn PDF document text
    • https://wotilawijuv.weebly.com/uploads/1/3/4/8/134852567/zasajep.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419433/normal_5f99c4d76213e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381756/normal_5f8ec127f2217.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393637/normal_5fc0609f352b4.pdfIn PDF document text
    • https://newusopuwizan.weebly.com/uploads/1/3/4/7/134713970/dovujexokokokekaganu.pdfIn PDF document text
    • https://zotikukubufo.weebly.com/uploads/1/3/4/7/134773644/c72886978f34ce8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe1e4d5147b14804fba243/1606295118176/73115787346.pdfIn PDF document text
    • https://s3.amazonaws.com/sazariwapa/manual_for_citizen_eco_drive_skyhawk.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_off0000d4b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4B1 5276 bytes
SHA-256: f40e408233ae661f41b1ce28b5eebdc2201914d65a68ab66bb57d19a91979d9d
font_01_sfnt_off0000e6d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6D1 10788 bytes
SHA-256: ed38014225fe28d1feccd1e4cf361e6be7c1b28d033bc789abe8a15f8c86e743

Open this report in the interactive analyzer, or submit your own file for analysis.