Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c8bd9cf9df2c6da…

MALICIOUS

PDF

71.3 KB Created: 2021-03-05 12:00:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 1412ff6ac09978a91b5ffd81f26e0d4d SHA-1: 74672fa62d89bef3e5da6406a2e36508e9ceff79 SHA-256: 1c8bd9cf9df2c6da5a020164f2e708767e88efaf31bf019842775fde6acd7e69
244 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://dafemum.ru/award?keyword=dell+inspiron+3847+power+cord In PDF document text
    • http://lololoj.sportsontheweb.net/2000_ford_ranger_replacement_rocker_panels.pdfIn PDF document text
    • https://babanude.weebly.com/uploads/1/3/4/0/134017813/915803.pdfIn PDF document text
    • https://dutudofedibajun.weebly.com/uploads/1/3/2/8/132815365/wolaviraretijed_dokudis.pdfIn PDF document text
    • https://mozeduxazos.weebly.com/uploads/1/3/4/0/134018133/86b6c58bdb6.pdfIn PDF document text
    • https://tudexabi.weebly.com/uploads/1/3/4/7/134770635/wudibazelasu-lajememuku-wolamozaxaxokug.pdfIn PDF document text
    • https://nusutaligufobam.weebly.com/uploads/1/3/5/3/135393176/3957662.pdfIn PDF document text
    • http://siviveko.getenjoyment.net/jebidusaverufu.pdfIn PDF document text
    • https://kilosite.weebly.com/uploads/1/3/0/7/130739696/zafujitapibe-lisulifiseze-kivoguxepuwav.pdfIn PDF document text
    • http://bewewafip.scienceontheweb.net/93485045148.pdfIn PDF document text
    • https://suzeziji.weebly.com/uploads/1/3/0/7/130739492/nabozete.pdfIn PDF document text
    • https://moxamegok.weebly.com/uploads/1/3/3/9/133999551/medasuzokoguze.pdfIn PDF document text
    • http://mapotilij.mygamesonline.org/c_language_printf.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
    • http://fixelelediv.epizy.com/99258221868.pdfIn PDF document text
    • http://sudimomovaw.epizy.com/34738516312.pdfIn PDF document text
    • https://4ad55601-b8ab-4ae0-bc0e-e90069072326.filesusr.com/ugd/3aca14_325d549999a44ffbb8c7f15e81c205b7.pdf?index=trueIn PDF document text
    • http://nisijavifusepov.epizy.com/12574331734.pdfIn PDF document text
    • https://bb55feb6-a0c4-48ae-8f72-aea2c45912f8.filesusr.com/ugd/b9801a_e02e7917778640169badb3869a7fe935.pdf?index=trueIn PDF document text
    • https://edcb5511-827b-40b0-97c1-3499c313f96b.filesusr.com/ugd/0779a3_97b64470e6cb45548e318e416dbaac27.pdf?index=trueIn PDF document text
    • http://paxubar.rf.gd/likiwozak.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cb49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB49 5184 bytes
SHA-256: 513337a7327598a726431894b83c31bc2686bd1695498ab1b8af3cbf53f47734
font_01_sfnt_off0000dd09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD09 10612 bytes
SHA-256: 4b5b39da6c56a9a23919d9c08c0bf6a8119b2220434ae37b8c6360c8abbccd01
font_02_sfnt_off0001014e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1014E 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230