Malicious PDF — malware analysis report

Static analysis result for SHA-256 781135b07ecdd09c…

MALICIOUS

PDF

75.2 KB Created: 2021-05-24 08:46:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: d59a8b880bb086ec41285c080e2d48dd SHA-1: 2e365c8712f74408fc02f009a780c46eac608f14 SHA-256: 781135b07ecdd09c6e623eb1ffb2d50f876ea80ca94819654d875bd33de75a11
186 Risk Score

Malware Insights

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

This PDF file exhibits characteristics of a link farm, with numerous external URLs embedded within its structure. The primary URL, 'https://maypoin.ru/strik?utm_term=honey+bee+2+malayalam+movie+songs+download', suggests a lure for potentially malicious content or phishing. The PDF's structure and the high number of external links, many hosted on disposable domains, indicate a deliberate attempt to redirect users to potentially harmful sites, aligning with phishing or malware distribution tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://maypoin.ru/strik?utm_term=honey+bee+2+malayalam+movie+songs+download PDF link annotation
    • https://jeduwenerapowi.weebly.com/uploads/1/3/4/6/134678879/4310227.pdfIn PDF document text
    • https://sitoluvumoroge.weebly.com/uploads/1/3/4/7/134762666/welureluv_mobaf_bilogevof.pdfIn PDF document text
    • https://rijozixofufake.weebly.com/uploads/1/3/4/5/134509282/sejowasubudada.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384828/normal_6036320491629.pdfIn PDF document text
    • https://mefixakiderix.weebly.com/uploads/1/3/4/3/134319494/bifibi.pdfIn PDF document text
    • https://basedupapopulow.weebly.com/uploads/1/3/4/3/134344364/b9c1075e35.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389816/normal_6041e4a084a20.pdfIn PDF document text
    • https://vejugowe.weebly.com/uploads/1/3/4/5/134506523/3509793.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479684/normal_6008b76189fbd.pdfIn PDF document text
    • https://jototafedapabo.weebly.com/uploads/1/3/1/3/131398279/adf5611f29.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/83115fa3-0921-4090-ad2f-ad363c6eb036/47302168138.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d1cadec6-0581-43b6-9444-2bae63458baa/how_to_self_clean_general_electric_oven.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4647e473-d0c2-4223-b515-128c97dbafc8/wevunikebonewuwodakuz.pdfIn PDF document text
    • https://s3.amazonaws.com/mogedozara/androidrepublica_addon_full_access.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b9df934-adb5-4fe6-870b-fc23d8878756/pejovadixonexozaja.pdfIn PDF document text
    • https://s3.amazonaws.com/vefagotoje/xarasiginuw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e6420876-9283-46b1-b452-35a88a73cdc0/33766431998.pdfIn PDF document text
    • https://s3.amazonaws.com/gotenukevepunin/49180218905.pdfIn PDF document text
    • https://s3.amazonaws.com/nefagolom/personal_information_sheet_coast_guard.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_off0000e8cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8CF 5536 bytes
SHA-256: 90fc88280589fdebc2f91b869485ce8bb5520427c93f20657307f1a9d2564043
font_01_sfnt_off0000fba8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBA8 10608 bytes
SHA-256: 94127025ec68c506d7f5af0fcfea516a72f727e325c781c047e4cb370e7c62c7