Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6286b825519a501…

MALICIOUS

PDF

74.9 KB Created: 2021-03-05 15:40:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aa6e832eeedd167a096b665c12f4893c SHA-1: 2c490e0264c77da1e5a9a88a4f4314971cd290a1 SHA-256: c6286b825519a501925c2623223d1918b02ae7eec20d9d8906cdd47377d3e4b1
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified as a link farm, with the primary suspicious URL being https://lozipotod.ru/aws?utm_term=craftsman+assurelink+wifi+setup. This heuristic, combined with ML classification and ClamAV detection, strongly suggests a phishing or malware distribution attempt. No scripts were extracted, but the structure indicates a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/aws?utm_term=craftsman+assurelink+wifi+setup
    • https://static.s123-cdn-static.com/uploads/4424672/normal_5fef9a62a2a60.pdf
    • https://cdn-cms.f-static.net/uploads/4418556/normal_5fd1c3eec1cc8.pdf
    • https://cdn.sqhk.co/kitujesijak/Ew8ieif/gowawasomivazasugumul.pdf
    • https://cdn.sqhk.co/fixefalid/7fOgdhh/gasexadezomokopupuku.pdf
    • https://cdn.sqhk.co/mepapogivoma/ibIUghB/elfster_secret_santa_shareable_wishlist_app_store.pdf
    • https://cdn-cms.f-static.net/uploads/4501208/normal_5fdbca620193e.pdf
    • https://cdn.sqhk.co/bewewojiwo/hzhiY18/robot_boy_cartoon_drawing.pdf
    • https://cdn.sqhk.co/pesamelez/dgeH1gj/snapping_turtle_characteristics.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://84daacc9-7e90-4c5d-b1ed-526950900c49.filesusr.com/ugd/73f3b0_6234ec55517c4e3f90abbf24f6990d17.pdf?index=true
    • https://6b9ff03a-ef48-417a-a14c-919df0f903d0.filesusr.com/ugd/f459ea_41f36da125d742f7a19f68a8228b5acb.pdf?index=true
    • https://1eba3b37-3dce-45e8-aa15-e51a58efc0fe.filesusr.com/ugd/89e37c_f2cd95769e2c4a4fa001edada20063eb.pdf?index=true
    • http://tutedenomazul.epizy.com/74983498203.pdf
    • http://wisunomimat.epizy.com/venituxanibagu.pdf
    • https://s3.amazonaws.com/dukexajuj/zijazo.pdf
    • https://s3.amazonaws.com/mejawiwomak/4_lines_handwriting_sheets.pdf
    • https://87164119-88a6-4d6d-a72f-b109cf2d88b9.filesusr.com/ugd/bd0a66_92bda4593edb4d02bc3103ae00768bc7.pdf?index=true
    • https://fb9345b8-40be-4608-a8ff-9c5427dba92f.filesusr.com/ugd/98d639_9ad70b0a64534f20be38d6b7f49bdd61.pdf?index=true
    • https://5fa60de5-32ab-41ac-ba65-77330e21e623.filesusr.com/ugd/2e16aa_fa8bf02cb6ea4b11a020e0d63f0fe21e.pdf?index=true
    • https://s3.amazonaws.com/bewibiwat/bosch_home_alarm_solution_844_manual.pdf
    • http://remivipe.rf.gd/how_to_become_a_certified_outboard_mechanic.pdf
    • http://wudokuzogikozu.rf.gd/denajolotativusufagagi.pdf
    • https://a7474f5d-6ec7-41e4-954d-8cb0a6a0c5ec.filesusr.com/ugd/b987d2_2ddbd197c29240eebeda48ef0a30fa09.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e696.bin
7f1fc9eb862ae8d8bb5df4ef8054fb484baa7c0fd44dec2629365e65dde82886		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE696 5108 bytes
font_01_sfnt_off0000f7f3.bin
b173396a7d1cb10590b0d273b21b4bc90378872da4a4ad90375a8303d1364178		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF7F3 11208 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.