Malicious PDF — malware analysis report

Static analysis result for SHA-256 3b82e448115c94df…

MALICIOUS

PDF

89.4 KB Created: 2021-03-06 12:15:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 61fc483b94210b9f1f094a7a34b25ad1 SHA-1: de7aafbdcfea9140b4079113ad31f29f008b1626 SHA-256: 3b82e448115c94df9ecc7b0ad4adb81eb93ef149e132d7d5353b04b5fe16dcac
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains multiple embedded URLs, one of which, 'https://dugedepap.ru/123?utm_term=jbl+xtreme+2+specs', is likely the primary lure, attempting to trick users into clicking it under the guise of product specifications. The document body is heavily obfuscated, preventing a clear understanding of its specific content, but the presence of external URLs and the malware detection strongly suggest a phishing or credential harvesting attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

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://dugedepap.ru/123?utm_term=jbl+xtreme+2+specs PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4445743/normal_5fedd90dd824e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451930/normal_60234b770703e.pdfIn PDF document text
    • http://itactical.xyz/duseginosk5z5n.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4488807/normal_5fd090f7140f2.pdfIn PDF document text
    • http://offthepdrs.com/781974141538npar.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393514/normal_5ff273b747abb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486523/normal_5fe7739c50285.pdfIn PDF document text
    • http://presentinsta.online/last_valiant_rerollixaep.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460466/normal_603bf3dfe40fd.pdfIn PDF document text
    • http://mebelintera.ru/54891029774b2xqo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417992/normal_5fcb20150ab2f.pdfIn PDF document text
    • https://cdn.sqhk.co/sitopizol/aggjhgi/95611106280.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454040/normal_5fe2b4f0d8d00.pdfIn PDF document text
    • https://cdn.sqhk.co/sabeludejem/je9pjgp/tepegavinewakew.pdfIn PDF document text
    • https://cdn.sqhk.co/finulepaf/zjfjghc/empty_paint_dropper_bottles.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381752/normal_5fdf4560e28f9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/cc1dd376-c4ea-4cce-923e-45f3d252ebd8/fish_in_a_tree_chapter_13.pdfIn PDF document text
    • https://s3.amazonaws.com/tugumeb/bergey_s_manual_pseudomonas_aeruginosa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ac568734-8da0-4014-87e8-52954149325c/learn_python_for_data_science_online_course.pdfIn PDF document text
    • https://s3.amazonaws.com/radubozufiwo/why_are_there_no_r_rated_movies_on_disney_plus.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4e178cdd-6d7e-4120-a426-08609d339ed9/how_to_pair_my_pebble_watch.pdfIn PDF document text
    • https://s3.amazonaws.com/bulujono/78858563956.pdfIn PDF document text
    • https://s3.amazonaws.com/vojapu/zajolakiner.pdfIn PDF document text
    • https://s3.amazonaws.com/fokapikow/fuwujipu.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010b6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B6C 5196 bytes
SHA-256: 232ebf84c4bd3c2db43775f88490a4e53c941daf862e47c3608b1bda3ec0ee85
font_01_sfnt_off00011d08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D08 10952 bytes
SHA-256: c582c7236787ff10fb3ce0d08b85f04ebb83e2db047e7d03200d34ea3a2be4ff
font_02_sfnt_off00014297.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14297 16140 bytes
SHA-256: 00468df452218f546d59995a7cf9b4297092e2fd476dbd2f6ce79846bd051107

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