Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca722a69c96891b4…

MALICIOUS

PDF

70.2 KB Created: 2020-12-24 22:07:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 1e45b3613812596a22d7b0b28969d33b SHA-1: e0f4f11ffc01d353a0afcf563534f334cce465f5 SHA-256: ca722a69c96891b4c8a3d33b6a49bf7ec120a11963c81a2c46e57e599f9a16aa
96 Risk Score

Malware Insights

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

The file is a PDF containing an embedded URL that leads to a suspicious domain, identified by ClamAV and ML classifiers as malicious. The document body, though heavily obfuscated, contains text suggesting it is related to 'alcoholism meaning pdf', likely a lure to encourage clicking the embedded URI. The presence of an external URI and the high confidence scores from detection engines indicate a phishing or malware distribution attempt.

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://traffking.ru/aws?utm_term=alcoholism+meaning+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4376125/normal_5fa5a96271555.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470224/normal_5fc69c0504f6e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486034/normal_5fb88d327df0e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387033/normal_5fb9f4601a5c8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366662/normal_5f8728f6bcad3.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/7e9a29cc-c5f6-41b3-ae89-e7d20ff6e47b/clone_hero_songs_not_showing_up.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5ebea471-d153-4f28-8a8f-b81d26d3926f/super_troll_islands_snes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4db67e55-59f3-4933-a1c8-78cc5b32ee3f/mens_signet_ring_silver.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d6b9f550-d820-4430-b6ef-f4523319cf3e/17412511667.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6be97a78-fa63-48e6-a29b-1998da0d0012/carta_sobre_a_felicidade.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e75f7f2d-3c23-4bd8-8127-fbdddead68f7/homework_passes_middle_school.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_off0000d651.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD651 5464 bytes
SHA-256: 54d2a8c7d3423b0acae6c9bb2074a9ecc2f74fa5ae3b3a5e603fcf4559a928a5
font_01_sfnt_off0000e8c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8C5 10408 bytes
SHA-256: 9687210448895c09d22dcfae4449e84c54443bef663be30ef8ee615d6b01c732