Malicious PDF — malware analysis report

Static analysis result for SHA-256 e77aa721bce3394f…

MALICIOUS

PDF

101.1 KB Created: 2021-04-07 08:27:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c0782eddc54e60d35cab509b4f0cbd3b SHA-1: d284ffd267e682664267492e26ec7f656b0e5d9d SHA-256: e77aa721bce3394f6b13c47c0820b3bfb3a752033dd23a6672924b5388924f92
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a malicious site. The document body, though heavily obfuscated, contains keywords related to the Basrah oil terminal, suggesting a lure for phishing or information gathering.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9981

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://lozipotod.ru/123?utm_term=basrah+oil+terminal+information
    • http://fedezin.scienceontheweb.net/barron_s_toeic_practice_exams_vk.pdf
    • https://cdn.sqhk.co/nivavepe/yoibhco/57316722078.pdf
    • http://gudelew.mywebcommunity.org/use_of_appropriate_preposition.pdf
    • https://dewufore.weebly.com/uploads/1/3/4/8/134857007/jopomozimamoxa.pdf
    • https://wijinopupog.weebly.com/uploads/1/3/5/3/135323990/loteruporof.pdf
    • http://dogalijun.scienceontheweb.net/oster_6_cup_rice_maker.pdf
    • https://pofitefe.weebly.com/uploads/1/3/4/6/134617546/51a110206a5aff.pdf
    • https://kazikuxixaremu.weebly.com/uploads/1/3/0/7/130738513/0d73b1b17f04.pdf
    • https://cdn.sqhk.co/temejikowewa/BNje2hi/85835262591.pdf
    • http://dusibarupuguli.medianewsonline.com/59692563813.pdf
    • https://mivodijabid.weebly.com/uploads/1/3/4/7/134732330/bokawara.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/9d4142e1-522b-4c4a-9f0a-77aedf32eafb/what_is_the_effect_of_rhythm_in_a_poem.pdf
    • https://s3.amazonaws.com/gonima/yatesville_lake_fishing_report_2018.pdf
    • https://uploads.strikinglycdn.com/files/18188bc6-abec-4a33-962f-71c197956aa9/matlab_book_in_bangla.pdf
    • https://uploads.strikinglycdn.com/files/dda06aee-5e03-499d-bbef-1d73e0fdb3ec/64228497298.pdf
    • http://rulamiji.onlinewebshop.net/69374610518.pdf
    • https://1801fa0f-56e4-4894-8452-b8e06651d4be.filesusr.com/ugd/868401_512a3366e17a4ca5888f3ed8c8f58c04.pdf?index=true
    • https://s3.amazonaws.com/gofilafixu/bitilalurulipiwiji.pdf
    • https://uploads.strikinglycdn.com/files/3fcd80a0-dd2a-4bf4-ab08-c1d015420617/sentence_of_the_week_gallagher.pdf
    • https://5c90cfa9-af55-48e2-9430-1f3580382729.filesusr.com/ugd/e2b09b_6612e2cdce81458da2a4aff5f3c93a2e.pdf?index=true
    • https://s3.amazonaws.com/lolaritemukole/cuddledown_sheet_sets.pdf
    • https://s3.amazonaws.com/pafexegud/68495836789.pdf
    • https://s3.amazonaws.com/bomifabipi/la_crosse_technology_alarm_clock_review.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://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License
    • http://scripts.sil.org/OFL

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off00015f39.bin
b135e8c144e8ab658bf7a0015339520fc1c0f686b39b8c92c856933dd5058037		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x15F39 21116 bytes
font_00_sfnt_off00010c6f.bin
e2f16d01b3429366fdbde4ae9e8cf3447e23cc0482524c533c473db121ee97e4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10C6F 3932 bytes
font_01_sfnt_off00011a75.bin
44183e01d264edb115a128e8aa57b60c4a0c05ca5d22577087d25c3dc850c7e9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11A75 5056 bytes
font_02_sfnt_off00012b78.bin
307461fe62e11265e41e336d3a0a691421473e0ccad47c225fe7c153c8139141		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12B78 16544 bytes

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