Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ea03ec26a730363…

MALICIOUS

PDF

83.6 KB Created: 2020-11-14 03:57:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 5c3542b6c542a4837995b33b0b8619a9 SHA-1: 1d970bd853d62c76d37034f8228aeaef62e83a76 SHA-256: 6ea03ec26a730363afdd92cd97943dc0c44e7b334ba1f3bdbd60c1bd5eddb24c
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It contains an embedded URI pointing to 'trafffe.ru', which is a strong indicator of malicious intent, likely for phishing or malware delivery. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://trafffe.ru/aws?utm_term=android+listview+adapter+onclick+item PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366660/normal_5f87cf1981486.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369922/normal_5fa9e51f2629b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449627/normal_5fa8e988edcae.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382638/normal_5fadd00fa8895.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421464/normal_5fa4713748f44.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371809/normal_5f8ed0d37eaed.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485301/normal_5fa9d24f0a7d1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://uploads.strikinglycdn.com/files/0dc51a91-7e02-4bcc-a25e-b7677507acdc/new_home_sewing_machine_model_534_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/wejuvono/gelaxiwoma.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/efe8a829-c1fd-4679-8854-64faae0bad38/12846243346.pdfIn PDF document text
    • https://s3.amazonaws.com/jezobasit/13005164138.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/diplomov_prce_upol.pdfIn PDF document text
    • https://s3.amazonaws.com/wopari/81776587192.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/68d7b7be-c8fb-47b2-90e9-af8abd0ad9d9/24406949552.pdfIn PDF document text
    • https://s3.amazonaws.com/numegubowalonan/ground_state_vs_excited_state_examples.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000de8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE8D 5424 bytes
SHA-256: a50435eba4659d3f2cc4b625783881d9dc15f77bb99678b09831df991297974e
font_01_sfnt_off0000f0fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0FA 1800 bytes
SHA-256: 51ebeec29509b87aa858d500e37ac8853184703d07d1f913ce36d8e1dc7764c0
font_02_sfnt_off0000f988.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF988 12164 bytes
SHA-256: e246918c55f56a7485361966990bb893da950654de5fe9a35d65a73ccbf02201
font_03_sfnt_off0001222f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1222F 9160 bytes
SHA-256: c6317947b5c54a420110ba6336abc4bb4718eb23adf097a931d0d81c5d08417a

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