Malicious PDF — malware analysis report

Static analysis result for SHA-256 180e3df05ba2005c…

MALICIOUS

PDF

72.9 KB Created: 2020-12-18 11:19:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 1cb7bd3d4aeefe3559b749d87ac77a8c SHA-1: d76b3e5ad159748c947e16dd51b847e49f741416 SHA-256: 180e3df05ba2005ca812094a4789a6c0087d07fc3a3984b7f683a71f70b7fc09
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, with one heuristic identifying it as a 'PDF_SEO_LINK_FARM'. The primary malicious URL, 'https://traffset.ru/strik?utm_term=hid+compliant+mouse+driver+windows+10+asus', is likely used for phishing or to serve a second-stage payload. ClamAV detection as 'Pdf.Phishing.Trojan' further supports its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://traffset.ru/strik?utm_term=hid+compliant+mouse+driver+windows+10+asus PDF link annotation
    • https://ruparowix.weebly.com/uploads/1/3/4/3/134350000/8912808.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/6c14fcf5-ee82-4e53-9cff-97ffbc7f057c/fundamentals_of_electric_circuits_6th_edition_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6677e00a-6e3a-48a6-89ab-50ceb22f4ecd/sunogedizavopalavuvine.pdfIn PDF document text
    • https://s3.amazonaws.com/xanunafojuloki/taguke.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bd1e3fac-0e6b-43f5-9535-cb920421360f/propagation_of_action_potential_slideshare.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e7a9003c-3f22-4e84-a2c3-37fcc49e6f65/everstar_portable_air_conditioner_mpa-08cr_parts.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/16aab466-3dc4-42b7-b083-5351d472c1c7/77774038454.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/555f82ec-420c-4fed-8fac-449412689fba/cider_apk_direct_download.pdfIn PDF document text
    • https://s3.amazonaws.com/jedaxopopuko/93086420813.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cfb54a57-a344-474a-b71e-3d45356c2073/52038923231.pdfIn PDF document text
    • https://s3.amazonaws.com/watajive/camp_lemonnier_djibouti_survival_guide.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_off0000dec2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEC2 5528 bytes
SHA-256: 774b0bc7ffc48c18e1d981a10e328fb51e79f9bbd4865530a3b0d9905945f50d
font_01_sfnt_off0000f188.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF188 11240 bytes
SHA-256: 047ddb5153f01a43887bd41470a174e6d09774d0bb6ebf8e51f2b6a5b86bd62f

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