Malicious PDF — malware analysis report

Static analysis result for SHA-256 90dd30e66a68b410…

MALICIOUS

PDF

72.1 KB Created: 2020-12-10 08:48:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: cb25dc0000f7a807a0045c732f0874ad SHA-1: b4f6fb86e3aeeca4d3161fee856d5708f82974af SHA-256: 90dd30e66a68b4106a2f401ce044da3573431313de880596f43f438dee39b965
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The document presents itself as a 'Husqvarna 224l parts manual' but contains an external URI pointing to 'https://traffnew.ru/123?utm_term=husqvarna+224l+parts+manual', suggesting a phishing or malware distribution lure. The PDF structure also indicates a link farm, potentially for SEO manipulation or distributing further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://traffnew.ru/123?utm_term=husqvarna+224l+parts+manual PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4413978/normal_5fc90d2d7413e.pdfIn PDF document text
    • https://vidajubobulixi.weebly.com/uploads/1/3/4/6/134650234/3704b8b9.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/5fc185bea8793968640cb600/t/5fc4b2fa61e25426e1cca181/1606726397849/lonnie_b_nelson.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc11e11ec917750a3d92ddd/t/5fc5031fbc819f1cf4766d65/1606746913984/business_career_sims_4_cheat.pdfIn PDF document text
    • https://s3.amazonaws.com/bubisifapagefe/fashion_stylist_salary_nyc.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e600f61f-d87a-42d9-8a9e-a64a21000c00/newexiwevegovimobixirixaf.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc30d46116eb00e3c59ffbc/t/5fc968d187997d7b5016c942/1607035090223/asteroid_hitting_earth_simulation_game.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f5c78600-645d-48d2-a2ff-d4f6fab0db83/92031421779.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc4c58d68612547ed76cd6f/t/5fd153f3f1e89449b1668c78/1607554036274/zujanje_u_usima_uzrok_i_lecenje.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3a78e2c6-dc18-4227-8853-e0ec0bee7de5/81501578811.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5c3490d9-b35f-45b7-b791-bed532adad65/fallout_4_dlc_weapons_in_commonwealth.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_off0000dcea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCEA 5332 bytes
SHA-256: 623e4363cd13e4fac50892d46718dd61c1ca49ff1bdac4a6702c3e1d7d153721
font_01_sfnt_off0000ef08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF08 10788 bytes
SHA-256: 453a8664dd08ca59205b9f8df34762a01a19a719df5709d71a7b94a1cbc17f51

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