Malicious PDF — malware analysis report

Static analysis result for SHA-256 92365f787687908e…

MALICIOUS

PDF

76.8 KB Created: 2021-06-06 21:42:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 006184bf3eb9a4d2c4fd4e55098b26cb SHA-1: 377fe4563f0ec870cbcb55a605765c158f470813 SHA-256: 92365f787687908e4d1fb314c978ba54e3d0ba3ef02405aaed2ca606d7d32a1b
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 identified as a phishing trojan. It contains an embedded URI pointing to 'philabc.ru', which is likely a phishing or malware distribution site. The document body, though heavily obfuscated, suggests a lure related to monitor resolution settings, consistent with a phishing pretext.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9953

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://philabc.ru/pbw?utm_term=how+to+adjust+resolution+on+samsung+monitor
    • https://static.s123-cdn-static.com/uploads/4470828/normal_5fefe3f456f74.pdf
    • https://cdn-cms.f-static.net/uploads/4455375/normal_6060aed53b204.pdf
    • https://cdn-cms.f-static.net/uploads/4494136/normal_600c7194cc58e.pdf
    • https://static.s123-cdn-static.com/uploads/4460980/normal_5ffd9a8e6ef4e.pdf
    • https://cdn-cms.f-static.net/uploads/4529149/normal_603f0077d0537.pdf
    • https://static.s123-cdn-static.com/uploads/4387232/normal_5fe15e310fa36.pdf
    • https://static.s123-cdn-static.com/uploads/4491925/normal_5fe128c3f2bbc.pdf
    • https://cdn-cms.f-static.net/uploads/4370987/normal_60b8de813fc21.pdf
    • https://cdn-cms.f-static.net/uploads/4450434/normal_5fd9022edaa6e.pdf
    • https://cdn-cms.f-static.net/uploads/4501789/normal_6051304ee3a91.pdf
    • https://cdn-cms.f-static.net/uploads/4419650/normal_60593c0776db4.pdf
    • https://cdn-cms.f-static.net/uploads/4485329/normal_5fdb956a480e5.pdf
    • https://cdn-cms.f-static.net/uploads/4445343/normal_604cc92dd6faa.pdf
    • https://cdn-cms.f-static.net/uploads/4465263/normal_605209f0500bf.pdf
    • https://static.s123-cdn-static.com/uploads/4455183/normal_5ff2baed532c8.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/af0b4e5c-3aca-4733-9d5f-a699823416ad/laselukufeb.pdf
    • http://zelovoguvunu.pbworks.com/f/maxonizonozu.pdf
    • https://uploads.strikinglycdn.com/files/27c10b9b-9add-4c63-a90c-233c0e43d472/what_film_can_i_use_in_a_polaroid_sx-70.pdf
    • http://joxakuruvi.pbworks.com/w/file/fetch/144649320/bolulodudatonoz.pdf
    • https://uploads.strikinglycdn.com/files/1dfe32c0-2dca-40c6-9c6b-7e61f26a61fa/21276508769.pdf
    • https://uploads.strikinglycdn.com/files/806c2efa-7b9e-4072-bdb6-7bc5c6419792/wadamukotiwifuvow.pdf
    • https://uploads.strikinglycdn.com/files/7d3029a7-a8db-484b-9d4a-907d68e4e23f/when_someone_genuinely_likes_you.pdf
    • https://uploads.strikinglycdn.com/files/17e71f3d-717f-4729-96dd-b88e565ced43/sansa_1gb_mp3_player_manual.pdf
    • https://uploads.strikinglycdn.com/files/be5c6771-96bf-4046-9ae7-793db470d6da/fodirunipagogipu.pdf
    • http://bukafag.pbworks.com/f/best_free_audio_recording_software_for_windows_xp.pdf
    • https://uploads.strikinglycdn.com/files/cd1bf38f-a769-4343-8a9b-bf63178f734c/st_louis_style_ribs_orion_cooker.pdf
    • http://vugufosenene.pbworks.com/w/file/fetch/144718503/dagagegemoputezodut.pdf
    • https://uploads.strikinglycdn.com/files/f9845f19-268b-41f0-abfe-3c295b8f97c7/ee_red_dachshund.pdf
    • https://uploads.strikinglycdn.com/files/ed6c5941-ac68-4469-a9de-5b33c74ce4ae/leadership_theory_and_practice_northouse.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ef21.bin
37544f118eb07ab6d7394c38a14ceea2900e4482e982762a513477c7715dd33a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEF21 5272 bytes
font_01_sfnt_off0001010f.bin
c7d8107209fa5ba266b7bb4c1fdcfead740ac2c87fb7a36461421d77a804cded		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1010F 10600 bytes

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