Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2e5183b70b9bc87…

MALICIOUS

PDF

61.3 KB Created: 2021-01-11 12:41:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 40a38209f3d6e3ca6ac524c4dd5b83bb SHA-1: 676906e1a7a41865ffd8d5ece777e2867be4ec4a SHA-256: e2e5183b70b9bc87f71909d8bb4e7b0445d47b8295c3be23c02ccd6cfcdda2a2
184 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical alert for linking to known malicious redirector infrastructure. The ML classifier also assigned a high probability of maliciousness. The embedded links, such as 'https://traffmen.ru/aws?utm_term=hunger+games+pdf+online', suggest a phishing or malware distribution attempt by directing users to potentially harmful websites. No scripts were extracted, but the PDF structure itself facilitates the attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://traffmen.ru/aws?utm_term=hunger+games+pdf+online In PDF document text
    • https://tovakuroxi.weebly.com/uploads/1/3/1/1/131164121/92ceec989.pdfIn PDF document text
    • https://jatorogerujew.weebly.com/uploads/1/3/2/7/132710569/bawap.pdfIn PDF document text
    • https://pibefabetanob.weebly.com/uploads/1/3/4/3/134376782/gupabejuxapotuvejev.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368972/normal_5fc05db732f32.pdfIn PDF document text
    • https://site-1175354.mozfiles.com/files/1175354/amma_un_marumagal_song_lyrics.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371246/normal_5f970beb37db8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404959/normal_5fb6a34f22ad2.pdfIn PDF document text
    • https://cdn.sqhk.co/lebogomatoze/lzih1X1/intersection_controller_game.pdfIn PDF document text
    • https://novebeze.weebly.com/uploads/1/3/3/9/133997241/toful.pdfIn PDF document text
    • https://cdn.sqhk.co/xoradofexul/ajbR2e7/twitter_advanced_search_date_range.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484995/normal_5fc6b2b5211ef.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_off0000b3be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB3BE 5320 bytes
SHA-256: d9d4e8a4763111ccebc810b2a92792acdf315c8772f216bdd87fb31e3471540d
font_01_sfnt_off0000c5c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC5C3 10280 bytes
SHA-256: 40fcf12ac3ce6d06050d364a419d1f0579df7dbc64e786fb98c1d93a7f0777ab

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