Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d09892ca9aaf633…

MALICIOUS

PDF

63.5 KB Created: 2020-12-18 01:17:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: c0b2d23b6eabd50f484ebedbb6fc7533 SHA-1: 35af5530909327fa3a5f4209f19660a5a66dc0c6 SHA-256: 2d09892ca9aaf633e1573edd98c475b1b49d66a0b8bc7ee35d072a426443ffb9
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing attempt. It contains an embedded URI pointing to a suspicious domain, likely intended to host a malicious payload or redirect the user to a phishing site. The document body, though heavily obfuscated, suggests a lure related to a computer manual.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://trafficel.ru/123?utm_term=bontrager+gotime+computer+manual PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4405639/normal_5fc1ec1c91e17.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476593/normal_5fd8af868bbcb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409248/normal_5fd344acc61f1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478430/normal_5fb68b5f0f85c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393359/normal_5fa1896fa7ba6.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/xamapebonijos/pexefofitatil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6b9171ee-1f69-40c7-adaa-f893b74fd1dc/warframe_pistol_mods_fire_rate.pdfIn PDF document text
    • https://s3.amazonaws.com/sisaxu/crowne_pointe_theatre_elizabethtown_ky.pdfIn PDF document text
    • https://s3.amazonaws.com/pomaxa/65779764599.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc730841969b523a41f6cce/t/5fccc439cded405bb8d5fa72/1607255099097/juventus_vs_barcelona_2019.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/64e7c3c5-129c-459a-a6d2-4ce62b00955c/joyce_name_meaning_in_bible.pdfIn PDF document text
    • https://s3.amazonaws.com/jadere/fuwijop.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_off0000ae7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAE7C 5008 bytes
SHA-256: cc2fd1b3db1966119913aa3a204add9e616647e6dff55cdfe2e18613406f5e9d
font_01_sfnt_off0000bf66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF66 10628 bytes
SHA-256: 6d8cfa3bab4d33924e087b6f353b5452ca497d6899d3b757370012e126ba5fd2
font_02_sfnt_off0000e35f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE35F 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176