Malicious PDF — malware analysis report

Static analysis result for SHA-256 a868e03cd61d4135…

MALICIOUS

PDF

73.2 KB Created: 2021-04-18 12:36:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bf74398d926f1016b044add014a3daf7 SHA-1: 7b0a0f0a81727c6b7dce5eecdbb06c5f715b2df7 SHA-256: a868e03cd61d4135c710593fd8a876739f598a969c6570536ec7aedab2894775
96 Risk Score

Malware Insights

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

The file is identified as a malicious PDF by ML classifiers and ClamAV. It contains an embedded URI pointing to a suspicious domain, likely intended for phishing or malware distribution. The PDF structure itself does not contain executable scripts, but the presence of the malicious URI is a strong indicator of malicious intent.

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://zajinet.ru/strik?utm_term=crochet+shell+stitch+baby+blanket+tutorial
    • https://cdn-cms.f-static.net/uploads/4460471/normal_60310966ceb8d.pdf
    • https://cdn.sqhk.co/kapideto/gg9idgg/44751578495.pdf
    • https://cdn-cms.f-static.net/uploads/4419836/normal_6065186b4e947.pdf
    • http://somamorizeti.iblogger.org/gopav.pdf
    • http://donuliwobem.iblogger.org/1997_ford_f250_replacement_body_panels.pdf
    • https://cdn.sqhk.co/jozojonujaj/hiCpgi7/best_romantic_ringtone_download_mp3_pagalworld.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/dovulavavo/introduction_to_tensor_calculus_for_general_relativity.pdf
    • https://uploads.strikinglycdn.com/files/4ec542a1-b9e8-466b-8c64-756cb4e33b38/south_west_water_insurance.pdf
    • https://74269c25-1731-4359-90d4-804f54ef9c1c.filesusr.com/ugd/b5973a_18027d2072a74d0aa1d3aa828ddf34c2.pdf?index=true
    • https://uploads.strikinglycdn.com/files/3a2d4ec4-25bd-460f-addd-72300d9f830f/whats_the_highest_paying_photography_jobs.pdf
    • https://s3.amazonaws.com/titugome/genie_2042_parts_list.pdf
    • https://s3.amazonaws.com/badodemebo/ac_dc_power_supply_circuit_without_transformer.pdf
    • https://uploads.strikinglycdn.com/files/476acd9a-63dc-4e09-95b7-64cf3b44a99b/conair_hair_clippers_instructions.pdf
    • https://4f65703b-d4c0-4c9c-9e30-73c8cc83ec5d.filesusr.com/ugd/54fa57_c91d224e7e84441fbe82784e066b7c1e.pdf?index=true
    • https://s3.amazonaws.com/befafuni/black_panther_hd_4k_wallpaper.pdf
    • http://domodevik.rf.gd/how_do_you_write_an_authors_contribution_statement.pdf
    • https://d5fb4b5d-766d-4e54-ab1c-ecc61d2b7d82.filesusr.com/ugd/b0c8dc_a6060f011c224429b2cf49ea99ac682c.pdf?index=true
    • http://deweget.rf.gd/15328538248.pdf
    • http://betugoxutufaf.epizy.com/aguas_de_marco_chords.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://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e205.bin
7b959e3cb69b390caa78afe711449f0d52402fa1543f5f995ef5d0d15f7ebfc1
pdf-font-stream PDF embedded font (sfnt) at offset 0xE205 5100 bytes
font_01_sfnt_off0000f35a.bin
57e85a09d623be6d4cc5a3c63efe058adfa66978701d79fa97e2cd0457ceaed3
pdf-font-stream PDF embedded font (sfnt) at offset 0xF35A 10416 bytes