Malicious PDF — malware analysis report

Static analysis result for SHA-256 0065195bc89abd6f…

MALICIOUS

PDF

78.6 KB Created: 2021-04-18 03:46:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: a6005d8aee0cb00079dafc6c4685e9e9 SHA-1: b035d31165633d1771a4512c16f4bbc5a780c81d SHA-256: 0065195bc89abd6f2738cd90150d6b8cfd6438b128dfea83b9188f93a07f935c
186 Risk Score

Malware Insights

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

The PDF file contains numerous external links, many hosted on disposable domains, indicative of a link farm or phishing lure. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and embedded URLs point towards an attempt to redirect users to malicious content.

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://mezovuduw.ru/strik?utm_term=honeywell+quietset+5+canadian+tire PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4446038/normal_5ffe5b4ba0291.pdfIn PDF document text
    • https://pitazifuriza.weebly.com/uploads/1/3/0/9/130969431/f9cf8c89a9f6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490961/normal_5fc8b397cbf69.pdfIn PDF document text
    • https://benipotuwazel.weebly.com/uploads/1/3/4/4/134445242/3670022.pdfIn PDF document text
    • https://womogidukiwu.weebly.com/uploads/1/3/4/8/134873304/nipebekug.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417815/normal_6044d4633718a.pdfIn PDF document text
    • https://wisukasef.weebly.com/uploads/1/3/1/4/131453855/naduxiwixalalum_milojitefuwav.pdfIn PDF document text
    • http://relodifalixogo.scienceontheweb.net/43407788428.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479684/normal_600154bb308d8.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://s3.amazonaws.com/tixeligufokup/black_belt_memory_jogger_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b376df1a-261b-4e66-9fee-2e8522351d99/technical_and_fundamental_analysis_forex.pdfIn PDF document text
    • https://7f3356c1-ec1f-498a-9d41-5b36c14d87b7.filesusr.com/ugd/98d33d_90df3fb00a804e269a5e58de54e64db2.pdf?index=trueIn PDF document text
    • https://2a082fd4-e93f-4b8e-9e59-408fa046b31c.filesusr.com/ugd/e334dd_ba84f1eee0ac4c8580d94d8a3ca40545.pdf?index=trueIn PDF document text
    • http://neloralo.myartsonline.com/90168567029.pdfIn PDF document text
    • https://s3.amazonaws.com/zedudo/rivevigaxodugadexubuw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1fe12ac1-fb1e-4450-8f51-92e5d56fe311/72490528071.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8a36668d-3d18-4382-8c48-fe5d3748c86f/25836495447.pdfIn PDF document text
    • https://a43ab9c2-5efb-4cee-ac06-b782a0f5e207.filesusr.com/ugd/4826f5_33fbb8a25ecf4ceda5f271cff3406fed.pdf?index=trueIn PDF document text
    • http://bugazepoja.onlinewebshop.net/newapopev.pdfIn PDF document text
    • https://s3.amazonaws.com/gedesisumi/the_compleat_distiller.pdfIn PDF document text
    • https://f77c8dad-41d7-4a8f-8d8d-c05149a3a236.filesusr.com/ugd/36d413_a4d4511e04f147fba358a1d7ce38b6a8.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_off0000e623.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE623 5220 bytes
SHA-256: 316bb292f10f4588197772f11b3561ae1be4a8930e44c3208ee93a6f2801248c
font_01_sfnt_off0000f805.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF805 11400 bytes
SHA-256: a4ef43b6ebb2b857d4316bcdf787897f83dd9c820f6848da3ce96f9876588b1f
font_02_sfnt_off00011ecc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11ECC 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378