Malicious PDF — malware analysis report

Static analysis result for SHA-256 f07d922d56e9c3ea…

MALICIOUS

PDF

74.8 KB Created: 2021-06-05 20:03:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 8db6690d3ade4838eb02d63094e503ec SHA-1: dddd01abf14e769e73e178666b5e5a2cd2a9367e SHA-256: f07d922d56e9c3eab8535b2444b6b0d7556b1b5bcfdc13317eb7f162905eb1ba
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, specifically flagged as Pdf.Phishing.Trojan. It contains an embedded URI pointing to a suspicious domain, 'nomylo.ru', which is likely used to host a phishing page or distribute further malware. No scripts were extracted, but the presence of an external URI in a malicious PDF strongly suggests a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://nomylo.ru/pbw?utm_term=wong-baker+pain+rating+scale+faces PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4376870/normal_5fe852068c752.pdfIn PDF document text
    • https://static.s123-cdn-static-d.com/uploads/4369158/normal_60b4fddc0f044.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384820/normal_6033695263947.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410414/normal_600a9aed2d76e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419193/normal_5fe8ef759452f.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
    • http://kuzimotum.pbworks.com/w/file/fetch/144543084/dragon_ball_z_tenkaichi_tag_team_ppsspp_android_download_mega.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/205f4dce-bedb-4f1f-9225-d44e9a0c076f/48096381675.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/571e3451-54b1-4d87-b8e8-5d3a3e9798b8/i_fiori_del_male_testi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7aabb440-db83-4b2c-83c6-9d756df517a9/58476964571.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/88b2c196-186b-4a20-a9cf-8e3555d1545f/todd_lammle_ccna_200-301_volume_2.pdfIn PDF document text
    • http://mevuteled.pbworks.com/w/file/fetch/144544647/bayes_theorem_probability_questions_and_answers.pdfIn PDF document text
    • http://fepazonavu.pbworks.com/w/file/fetch/144673116/pufunewebisuladikugitopek.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bf29c621-dd47-4cb6-a30c-e8ece54a82aa/wildgame_innovations_feeder_says_jam.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/93c7c13f-6345-4bb8-9f2e-9763828d9b0b/kasijebotudaxemerevupig.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/60d8a17b-683c-46a2-b5e8-fa70dc4e9825/tuzujazeti.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f9e42e19-a701-46d9-b2c8-9b776faf6c64/tijezejova.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/325d22be-0af8-4cda-b73f-850edc92d59b/imax_b6ac_balance_charger_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3e39af02-946f-47ef-b3a7-c7841beb490b/how_do_you_describe_oxbow_lakes_are_formed_animation.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4ec3b328-9457-451b-86c7-b9907dafa23a/how_many_cameras_can_connect_to_moultrie_mobile.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_off0000dab8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAB8 5220 bytes
SHA-256: b173e686f54a91b5958dd4a7b3bd45a02d28f22bfef1e64db095cc41e8b600c7
font_01_sfnt_off0000ec9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC9C 10204 bytes
SHA-256: c0855030a86613985fd9d6b17c99e4b4a91b0bf2b0414d35f3e2fd04552f4a40
font_02_sfnt_off00010f8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F8A 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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