Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc59d13b30f88bd6…

MALICIOUS

PDF

65.2 KB Created: 2020-12-26 03:51:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 0b3bf3ef167c14b1339b493a3f6c042c SHA-1: 74a6c6108a9ab9f2d97d7760b12a7ab1c9a3398b SHA-256: bc59d13b30f88bd64df7ee1c9fbcb8cf8119062632b2c8f053a13c2cbddf221f
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file is identified as malicious by ClamAV and an ML classifier, and it contains numerous external links, including a suspicious URL pointing to 'trafffe.ru'. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external PDF links, suggesting an attempt to manipulate search engine results or redirect users to malicious content. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a phishing or malware distribution attempt.

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 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.
  • 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/strik?utm_term=mobil+1+rally+championship+ps1+iso PDF link annotation
    • https://tevutilig.weebly.com/uploads/1/3/4/5/134585367/sabasidid_dudaku.pdfIn PDF document text
    • https://beweluka.weebly.com/uploads/1/3/4/6/134694692/3612529.pdfIn PDF document text
    • https://wowavimisaken.weebly.com/uploads/1/3/0/8/130814021/15cb71d29d86018.pdfIn PDF document text
    • https://desaviguwogo.weebly.com/uploads/1/3/1/8/131871994/lolezasukivanefad.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421944/normal_5fc3b59f1e062.pdfIn PDF document text
    • https://dajolulozofupo.weebly.com/uploads/1/3/4/6/134634221/077939263dc24.pdfIn PDF document text
    • https://nazizuvadonilu.weebly.com/uploads/1/3/4/5/134590702/5385962.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387046/normal_5fa4fb9deb854.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/perurulexi/popurajixi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e05f216b-1438-4038-a545-21c5980cf389/agent_zed_mib_3.pdfIn PDF document text
    • https://s3.amazonaws.com/vuraradaso/losonasinaxulumibifa.pdfIn PDF document text
    • https://s3.amazonaws.com/gazitif/happy_birthday_background_song_free.pdfIn PDF document text
    • https://s3.amazonaws.com/jazofi/goblin_slayer_9.pdfIn PDF document text
    • https://s3.amazonaws.com/rimejiguvif/vanguard_zero_apk.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_off0000b48c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB48C 5060 bytes
SHA-256: 6a80ebb48a9960434683b6f04784b15cf560e28a5beeeb32605fe889af34d59a
font_01_sfnt_off0000c582.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC582 10556 bytes
SHA-256: f622e85f4305ed2a47094cb0988961f7b8b79515ea85a42768c188912b703552
font_02_sfnt_off0000e9a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9A0 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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