Malicious PDF — malware analysis report

Static analysis result for SHA-256 aaa7895a150f9ade…

MALICIOUS

PDF

74.8 KB Created: 2021-01-06 15:37:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: b792c44e84d9bc320246d22a9e3ef58e SHA-1: bd123eca41c50997bdb42a37ee1e60960f2d0b2f SHA-256: aaa7895a150f9ade32c98b50616d9149017b04fee4fed49e61bb6dd50eb2c7db
104 Risk Score

Malware Insights

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

The file is identified as malicious by a machine learning classifier and ClamAV, with a heuristic indicating it contains an external URI. The document body, though heavily obfuscated, contains text related to an 'accident report', suggesting a lure. The embedded URL points to a suspicious domain, likely serving as a phishing or malware distribution point.

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
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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/aws?utm_term=accident+report+dmv+va PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4421038/normal_5f9a2f0491307.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450038/normal_5ff3644a1141c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417815/normal_5fb25c5e63eeb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4391331/normal_5fef43d547957.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450036/normal_5ff213c3c4807.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/13bc5382-fd09-4a63-9e59-261defe8d29d/60304221177.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8f4a19bb-1fa2-4a8f-b525-9ef8b29af186/leaf_footed_bug_nymph_red.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2c2923bf-c50c-4bfb-8d46-727dea3de9b2/xipesamolenamojegi.pdfIn PDF document text
    • https://s3.amazonaws.com/latufenaw/ark_broodmother_gamma_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3332e47b-c3dc-4de6-bab1-c178b26e91c3/xoloboxitajevivabas.pdfIn PDF document text
    • https://s3.amazonaws.com/wopari/muwifebikolivoza.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0207ee9b-7c02-4e24-ac36-df5505976edb/gobapaso.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/84df0116-645d-46e0-bd46-596c30103a7e/xenilogek.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d9829038-ffe6-4685-aaa5-bc7e96b02775/65053482927.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c0ad18b2-eac6-479d-be85-55f5e240a950/78166387698.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/015e1e02-73b7-4655-8897-0a3005223b0c/71997345774.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_off0000e9e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9E6 5056 bytes
SHA-256: 0a910fb9910e57143af7def4a036f2c29ee07b4d0785667e78501196eed78634
font_01_sfnt_off0000fb08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB08 10284 bytes
SHA-256: 86c5dd704f87170ad0fce5bda8d3ddd1077945142b85750d883fdf7d326ec418

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