Malicious PDF — malware analysis report

Static analysis result for SHA-256 292da6ee42b2e96b…

MALICIOUS

PDF

89.2 KB Created: 2021-03-25 12:27:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 0ba4c799f705e3f646d25510825c3221 SHA-1: 086de49b1ec4aaf9daf6b1b91959f5671957d416 SHA-256: 292da6ee42b2e96b1863a37053c0ff8eeeaa85e466579717d302907caf4b0f48
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, containing numerous external links to other PDF files hosted on various domains, some of which are disposable. The primary purpose appears to be SEO manipulation or directing users to potentially harmful content, aligning with phishing or malware distribution tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://kuzutuzo.ru/wix?keyword=ladies+silver+platform+pumps PDF link annotation
    • https://fotizewuzawefuv.weebly.com/uploads/1/3/4/6/134668380/segamuvazitejebuvama.pdfIn PDF document text
    • https://zunimivivonuz.weebly.com/uploads/1/3/4/0/134017399/wewatanizakaxadiwud.pdfIn PDF document text
    • https://nonedavoxezi.weebly.com/uploads/1/3/5/9/135956696/09a4e0f5c0.pdfIn PDF document text
    • https://fakazurirogedim.weebly.com/uploads/1/3/4/7/134743668/2237263.pdfIn PDF document text
    • https://cdn.sqhk.co/rubekafux/rwidid6/boy_golf_games_online.pdfIn PDF document text
    • https://cdn.sqhk.co/nikapeke/OhhTibc/voico_uae_apk_download.pdfIn PDF document text
    • https://cdn.sqhk.co/nukusigemug/hahcZ7r/mezibozuzomelojamajades.pdfIn PDF document text
    • https://febafowizozijuz.weebly.com/uploads/1/3/4/8/134860945/vukibiben.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://12350a4d-732a-4148-85a7-4fa27f2a77ec.filesusr.com/ugd/17beed_9d1141333e2549bf94fe4ed2c376522f.pdf?index=trueIn PDF document text
    • https://cbb9655c-b60d-4095-8c1c-bb5f9a2903c5.filesusr.com/ugd/4dd980_122fd14b1ea0490893146eb177db2957.pdf?index=trueIn PDF document text
    • http://vifebekomese.rf.gd/30357502563.pdfIn PDF document text
    • http://wuxodevidupibe.epizy.com/bournemouth_map.pdfIn PDF document text
    • https://3d636ecf-b5c4-4691-845c-2d501a7a8090.filesusr.com/ugd/b09df1_cb5afaa9f1364d48849fcac9c00a7e87.pdf?index=trueIn PDF document text
    • https://57ead060-d7b3-4f59-a803-6c9b47c0028a.filesusr.com/ugd/f30481_7b42c9e0f0d04f44b4e6aa8733572bcc.pdf?index=trueIn PDF document text
    • https://34e223d5-b18a-4f89-96b3-7c58aa965d90.filesusr.com/ugd/440e29_0061ea5b0f294793b79c06356b9cc126.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zepifudoxapo/camera_sony_dslr_a100_manual.pdfIn PDF document text
    • http://mafasegu.epizy.com/convert_image_to_word_document_free.pdfIn PDF document text
    • https://s3.amazonaws.com/kobivimelelo/65098489581.pdfIn PDF document text
    • https://aa5f33e9-793b-4807-a257-9eac84d314d0.filesusr.com/ugd/aa57b2_fb955ded41e24755bddce620d2e3e93d.pdf?index=trueIn PDF document text
    • https://95e354e6-8561-4e52-807b-deb85f3b5fdd.filesusr.com/ugd/ca9b0a_fc153df92ebf42628e1505c7209dbdfb.pdf?index=trueIn PDF document text
    • https://146c8b6c-0b46-450b-8ed0-b45f1e2a4974.filesusr.com/ugd/b58d21_5bc122b41af44f7a8f5ee168c5bbcef9.pdf?index=trueIn 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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011277.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11277 4964 bytes
SHA-256: 78a725d6047438a264c47b3d925b6180a9d7f4b490dcf76845f4112f32337a5d
font_01_sfnt_off00012365.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12365 11532 bytes
SHA-256: c7d97110e3ec8033d19daa0f10d28a412598f6b7208510fd33f8a64aa735a7b4
font_02_sfnt_off0001496d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1496D 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361