Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c2d1780f55f0efa…

MALICIOUS

PDF

75.4 KB Created: 2021-04-06 23:41:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 041d7b6b182e5ae3a49befee377cc6cb SHA-1: 53072505bb5535e8ed51394d94fb122720a051d2 SHA-256: 7c2d1780f55f0efa94fd48e7d42703baa4b685eba52cc3b263acf9e2c2abfa32
194 Risk Score

Malware Insights

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

This PDF document contains a large number of external links, many hosted on disposable domains, suggesting a link farm or phishing attempt. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. Although no scripts were explicitly extracted, the presence of numerous external links and the 'SE_INVOICE_LURE' heuristic suggest the document is designed to trick users into navigating to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 7

  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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/123?utm_term=debtors+and+creditors+aging+report PDF link annotation
    • http://mipuruf.22web.org/charlotte_web_character_traits_worksheets.pdfIn PDF document text
    • https://siresikewutawin.weebly.com/uploads/1/3/0/7/130739490/1899709.pdfIn PDF document text
    • https://zokofefedepop.weebly.com/uploads/1/3/1/4/131437243/megonuveg-feloxasoxegopew.pdfIn PDF document text
    • https://porijupipisezug.weebly.com/uploads/1/3/4/7/134718457/aa6698d84e304.pdfIn PDF document text
    • https://mamowoxu.weebly.com/uploads/1/3/4/2/134265364/6609888.pdfIn PDF document text
    • https://joletumutete.weebly.com/uploads/1/3/4/8/134871701/dfb30.pdfIn PDF document text
    • https://japapitamamevoj.weebly.com/uploads/1/3/2/7/132740309/wozewarobuwab.pdfIn PDF document text
    • https://tizelilof.weebly.com/uploads/1/3/5/3/135311218/df8528da.pdfIn PDF document text
    • https://gamitodotabezoj.weebly.com/uploads/1/3/1/4/131453651/sutawuwelexavipefes.pdfIn PDF document text
    • https://fitoposibex.weebly.com/uploads/1/3/4/3/134364930/guwitezefegibinume.pdfIn PDF document text
    • https://sedapelagug.weebly.com/uploads/1/3/4/1/134109100/pozusa-wikukas-kixarul-dajikilasanitek.pdfIn PDF document text
    • https://toxobeveja.weebly.com/uploads/1/3/1/4/131437160/899eb0298cf.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://domirewuzi.epizy.com/national_geographic_almanac_2020.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0c995a05-6101-47cb-b450-201bcd3d9640/ravabolifaw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4d68f1e5-4a35-4b72-b848-b479375f33ce/how_to_put_decals_on_glass_blocks.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b0a4ac19-e117-4415-856e-f11368ffbbd1/wezotaxadov.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/df0e31ef-64df-417b-b54e-e0673b72e3c8/51013119054.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b33714d9-6571-40ad-a5d7-3331e3424d76/the_selection_movie_release_date_2020.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/842e7cfc-f263-4922-baa9-865cd761c4e0/tunugefakojotudimu.pdfIn PDF document text
    • http://gewapapis.epizy.com/26126174734.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/42347fc3-21df-4408-a1ad-900b98cc7991/85292264369.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_off0000ea5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA5C 5348 bytes
SHA-256: e699b96ad5d491e4cfe91726eac1cd09afc52f7b6a9abc074c4308ee24fbc9da
font_01_sfnt_off0000fc98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC98 10288 bytes
SHA-256: be59fa896c34988ebf60590ea3b3547acbed84672813225e872ebaa570f260bf