Malicious PDF — malware analysis report

Static analysis result for SHA-256 1bbfaf68701334fe…

MALICIOUS

PDF

82.5 KB Created: 2021-03-22 03:47:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 75af130e7875203d77e60ca8f0e34de9 SHA-1: b4f12f2c7c2f88ddcc56bddb7570147fe80c4830 SHA-256: 1bbfaf68701334fe404017241d8d9bd89ba086ca3f40c43f7e9d4a457927e98b
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, with a high risk score. It contains an embedded URL pointing to a suspicious domain, which is likely used to deliver a malicious payload or redirect to a phishing site. The document body, though heavily obfuscated, suggests a lure related to a book search, aligning with common phishing tactics.

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://pelibifir.ru/wix?keyword=howl%2527s+moving+castle+book+2+pdf
    • http://nevinidonet.mywebcommunity.org/jiluzekad.pdf
    • http://hairsprof.ru/gestion_de_la_calidad_total_cuatrecasas4j3e9.pdf
    • http://kesewezixun.iblogger.org/33581269788.pdf
    • http://xifasiv.getenjoyment.net/easy_touch_test_strips_how_to_use.pdf
    • http://dovejeve.22web.org/kicker_motor_mount_swim_platform.pdf
    • http://wildboost.club/how_to_write_a_conclusion_for_literature_review0dqnz.pdf
    • http://tiruxukanemaga.iblogger.org/bimamagupodamusavit.pdf
    • http://makelemeg.mygamesonline.org/rocker_anarcho_syndicalism.pdf
    • http://secureappeal.com/ford_mustang_mach_e_weightbq26p.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://9ebe8999-295a-4f11-87dc-c96f3e1b46ff.filesusr.com/ugd/8de238_10f0894b43a14c9f915ee4591051202d.pdf?index=true
    • https://s3.amazonaws.com/vogubivajavofu/brother_birthday_cake.pdf
    • https://s3.amazonaws.com/legipalofi/vertical_limit_full_movie_hd.pdf
    • https://c3438639-6a75-4920-aa4f-d1e0b619354f.filesusr.com/ugd/3be3a7_524343e9fc4a4c5a9956133fd64d6848.pdf?index=true
    • http://jatoxat.atwebpages.com/kinder_morgan_co2_pipeline_map.pdf
    • https://720c7b34-a033-4bf0-83ea-6be17de98aa2.filesusr.com/ugd/03ef8e_22d159e3f58a418bad802e7eda186493.pdf?index=true
    • https://a3c35cc3-4a3f-4d41-ab51-8b3e4b114d30.filesusr.com/ugd/2b25b5_c3802acee9684e3d89485fa59a5788d7.pdf?index=true
    • 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f55d.bin
44b74ef2c72b94442f15959cc97b3976c8c32a42de0cd8a76640ad1b943caef8
pdf-font-stream PDF embedded font (sfnt) at offset 0xF55D 5648 bytes
font_01_sfnt_off0001089a.bin
f614cd64b470f68f05ace91a5b21c989faa8476fc07b1c55bf8a6bcfe607b644
pdf-font-stream PDF embedded font (sfnt) at offset 0x1089A 11128 bytes
font_02_sfnt_off00012e78.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c
pdf-font-stream PDF embedded font (sfnt) at offset 0x12E78 4324 bytes