Malicious PDF — malware analysis report

Static analysis result for SHA-256 6042e5d61fad57fe…

MALICIOUS

PDF

68.9 KB Created: 2021-03-22 00:22:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 2dd92e4df1ca3de24aa59f65abfa01bf SHA-1: 6b3936bfb29fd984f53968459b808d54120b2061 SHA-256: 6042e5d61fad57fe735ef969df89d8af0064f600c5689716cec81728d0c8895f
186 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains a large number of external links, many pointing to disposable domains, suggesting a link farm designed to distribute malicious content or engage in SEO poisoning. The embedded URLs and the PDF structure strongly indicate an attempt to redirect users to potentially harmful sites.

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
  • 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://soxebez.ru/wix?keyword=tv+guide+vancouver+island PDF link annotation
    • http://lufexaxoxak.mygamesonline.org/ateten_gmlek_romannn_tahlili.pdfIn PDF document text
    • https://cdn.sqhk.co/majumoros/hdkjchO/cubacel_recargas_internet.pdfIn PDF document text
    • http://gipogup.sportsontheweb.net/fulltone_ocd_v3_vs_v4.pdfIn PDF document text
    • http://kalinakudukutim.22web.org/16650213853.pdfIn PDF document text
    • https://cdn.sqhk.co/lojumisebu/hiwjgra/gubugagixufabeguwejusifos.pdfIn PDF document text
    • https://cdn.sqhk.co/nakotuba/iVhh69r/flick_shoot_2_mod.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://fe2b84af-b373-48e0-a714-f820169e3fe9.filesusr.com/ugd/ed1d2e_e68ea54cf78f47209b4f70d1260f8d5a.pdf?index=trueIn PDF document text
    • https://fb075467-9d00-46c6-93ac-2b777f5e584b.filesusr.com/ugd/8bcd66_419fdb07af1146149f0a9babed04367f.pdf?index=trueIn PDF document text
    • http://nukilaba.myartsonline.com/76103567218.pdfIn PDF document text
    • https://a146b927-ed54-472d-b3a8-6b137e313b92.filesusr.com/ugd/4d400c_fd7e8fd225394a82987d027c0e04f32f.pdf?index=trueIn PDF document text
    • https://8d59741e-369e-44be-b01e-8fbcb09d2d01.filesusr.com/ugd/7cefa9_58c8a114ae2646ed90a7c8fad3250a60.pdf?index=trueIn PDF document text
    • https://9005a25f-7293-4a73-bb0f-bc58e8c16807.filesusr.com/ugd/e3834b_921e389931d9463b946dba14f13e04fd.pdf?index=trueIn PDF document text
    • http://lolurisufetofel.epizy.com/nukawoxinul.pdfIn PDF document text
    • https://1b3fde16-7575-45ba-b40e-8916c64185ca.filesusr.com/ugd/8874e8_29e09b940dc14726aa3f728613717c13.pdf?index=trueIn PDF document text
    • http://wulibazosuxib.onlinewebshop.net/taxenigekixozukin.pdfIn PDF document text
    • https://d5f1d3db-1598-48d0-a061-764c190a6564.filesusr.com/ugd/866690_ed3158eeb93c4573b2e1a808d0e8fcf8.pdf?index=trueIn PDF document text
    • https://6cdf8c5e-36a0-4b6d-987f-32d3d50030cd.filesusr.com/ugd/3c2e2e_2979a8470db24919931855abcd31ec34.pdf?index=trueIn PDF document text
    • https://c183b790-cb34-49aa-848e-1a9f2b14dda3.filesusr.com/ugd/d8966e_3822abd3deb14ec982242f90f7fadc04.pdf?index=trueIn PDF document text
    • https://4f65703b-d4c0-4c9c-9e30-73c8cc83ec5d.filesusr.com/ugd/54fa57_b6ac800de91f4b46b037604261b96411.pdf?index=trueIn PDF document text
    • http://bitinorakinin.epizy.com/samsung_sdr-b74301_admin_password.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d108.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD108 5116 bytes
SHA-256: f5a1d6e0641201520fc734e64173f6cc517e9c7bc9c64620889209cde33dff30
font_01_sfnt_off0000e287.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE287 10812 bytes
SHA-256: 5cc2c37a3ab4af9ab85435ff514ed2b081836d00d100d4457b7bf362805d80d4