Malicious PDF — malware analysis report

Static analysis result for SHA-256 a29ddd6732b58f5b…

MALICIOUS

PDF

71.4 KB Created: 2021-03-22 17:57:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4b49038ef16e97017c1c5ad67b395bcb SHA-1: 903f03278dbe41f8bf2a810259bd24b412589b53 SHA-256: a29ddd6732b58f5b2d2e926d9b98122cffa86d70c001c2f870a9ac6f6daf2b48
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, which is highly indicative of a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly support its malicious nature. Although no scripts were directly extracted, the PDF structure and embedded URI suggest it's designed to redirect the user to a malicious site.

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=super+paper+mario+wad
    • http://help-verifiedbadgecenter.com/184876579831onr.pdf
    • http://austritkfa.com/what_is_the_difference_between_6_and_7_series_samsung_tvb6crb.pdf
    • http://modernstyle.pro/tezabe26lx.pdf
    • http://topmassage.net/what_is_the_average_salary_of_an_automotive_technicianak0kt.pdf
    • http://gokawojop.scienceontheweb.net/convert_to_word_through_i_love.pdf
    • http://lojapidabud.mypressonline.com/bickerstaff_encephalitis.pdf
    • https://cdn.sqhk.co/wagomito/ggchjgg/guess_the_picture_zoomed_in_game.pdf
    • https://cdn.sqhk.co/tifobebe/pejc2hg/fat_bike_racing_tires.pdf
    • http://siwupezomejen.getenjoyment.net/51011973282.pdf
    • http://magnifioco.site/google_maps_api_v3_tutorial015n0.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/030d56c5-df67-4801-8a1d-80805e596613/group_theory_nptel.pdf
    • https://s3.amazonaws.com/lekizopiloref/desitotapiruwomovafofejom.pdf
    • https://uploads.strikinglycdn.com/files/226610fe-4bea-48ae-be31-1a4ee6cb2de7/compound_interest_worksheets_grade_8.pdf
    • https://s3.amazonaws.com/dugibabafod/bleach_opening_1.pdf
    • https://s3.amazonaws.com/gupojakami/1999_grand_cherokee_owners_manual.pdf
    • https://s3.amazonaws.com/sumesawoxajew/94526358504.pdf
    • https://21a67f6d-2aea-439f-a910-ed4feb6be009.filesusr.com/ugd/173616_34f7830d0415423d8d28df126feb5e98.pdf?index=true
    • https://eb62986f-0112-409a-9ebe-777412bc5c19.filesusr.com/ugd/26938b_b6457012f7d64943a273d5d5a714ef89.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_off0000d05b.bin
9985288f20e6c46ac8c9f24d46b3e0b34250f1a3acd5ba68559c544e2385fb52
pdf-font-stream PDF embedded font (sfnt) at offset 0xD05B 4784 bytes
font_01_sfnt_off0000e0a7.bin
72dd8df696d677024e7b669fd12b2fa74641ff97a785787f6b3af4a7dc7e9bf8
pdf-font-stream PDF embedded font (sfnt) at offset 0xE0A7 9820 bytes
font_02_sfnt_off00010264.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176
pdf-font-stream PDF embedded font (sfnt) at offset 0x10264 4324 bytes