Malicious PDF — malware analysis report

Static analysis result for SHA-256 118625c9dc517131…

MALICIOUS

PDF

74.2 KB Created: 2021-01-18 01:28:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 3de5b149580c1f3719f47bcca44e838a SHA-1: 6ae565e8c9e0394ef40e465f6381480e09fc1488 SHA-256: 118625c9dc517131f967a4aaf9adaf374a2b85ef5016a1e1bdbc115efd5c6b31
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL that mimics a search result for a popular game mod, likely intended to trick users into visiting a malicious site. No scripts were extracted, but the PDF structure and embedded URL indicate a phishing 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://trafficel.ru/wb?keyword=herobrine%20mod%20minecraft%20pe PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4449185/normal_5fc80f4a5e1de.pdfIn PDF document text
    • https://gugajapu.weebly.com/uploads/1/3/5/3/135330564/wajiwerava.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418368/normal_5fe420bb6e336.pdfIn PDF document text
    • https://site-1180061.mozfiles.com/files/1180061/kaboxitoruxilolivivulaj.pdfIn PDF document text
    • https://site-1173941.mozfiles.com/files/1173941/volume_boost_bass_boost_equalizer_sound_booster.pdfIn PDF document text
    • https://site-1177779.mozfiles.com/files/1177779/borg_warner_velvet_drive_rebuild_manual.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423728/normal_5fd99f6dd0cfb.pdfIn PDF document text
    • https://site-1166068.mozfiles.com/files/1166068/5832700243.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384295/normal_5f920dbca6042.pdfIn PDF document text
    • https://vozekokojexofu.weebly.com/uploads/1/3/4/6/134645554/7611400.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
    • https://s3.amazonaws.com/vasofirida/harley_quinn_pictures.pdfIn PDF document text
    • https://s3.amazonaws.com/mipeboro/khatrimaza_south_movie_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/muvemasoxaji/ariesms_guide_to_gears.pdfIn PDF document text
    • https://s3.amazonaws.com/juzowilipi/64812602972.pdfIn PDF document text
    • https://s3.amazonaws.com/pujinit/township_game_regatta_tips.pdfIn PDF document text
    • https://s3.amazonaws.com/xipavir/83807371825.pdfIn PDF document text
    • https://s3.amazonaws.com/vexosafugunu/giralu.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_off0000d99e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD99E 4980 bytes
SHA-256: a46ef0cc2513236bd7678f5db4a8d388fd86ade52a0f8458e51bdd6e81ce9739
font_01_sfnt_off0000ea58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA58 10424 bytes
SHA-256: c7ef0aeb74ccf5c2f7e0f44a7dc8b88f2fa01090eab6f50ebf19279acc0be7b8
font_02_sfnt_off00010de6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DE6 4324 bytes
SHA-256: 8405bb6ca9a6fb718a2e910e1cdde4d74ac2122cab0061dc5f772322db9c7ccd

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