Malicious PDF — malware analysis report

Static analysis result for SHA-256 629614a74ebfd439…

MALICIOUS

PDF

110.7 KB Created: 2021-05-22 17:35:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 95de1de9be5e603678b09827a6177cbe SHA-1: db50e815cc43d9b8e19201450c705f19be97fae2 SHA-256: 629614a74ebfd439dd55a434c0ee17030ddbf975732166c0dfdd52888884b009
156 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many pointing to PDF files hosted on various platforms, suggesting a link farm or redirection mechanism. The primary URL, 'https://jumiwimov.ru/strik?utm_term=whirlpool+dishwasher+wdt720padm2+specs', appears to be a lure, potentially leading to a phishing page or malware download. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9891

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://jumiwimov.ru/strik?utm_term=whirlpool+dishwasher+wdt720padm2+specs
    • https://static.s123-cdn-static.com/uploads/4499300/normal_6008fe4edc2c5.pdf
    • https://cdn-cms.f-static.net/uploads/4369307/normal_601d805d11f30.pdf
    • https://molilavavabofu.weebly.com/uploads/1/3/5/9/135989114/kawatufevob_demesezeza.pdf
    • https://cdn-cms.f-static.net/uploads/4366364/normal_6033106059e91.pdf
    • https://static.s123-cdn-static.com/uploads/4489980/normal_6001d4715f7fe.pdf
    • https://cdn-cms.f-static.net/uploads/4503309/normal_6043354b6a29c.pdf
    • https://gerivelizozil.weebly.com/uploads/1/3/4/1/134131902/zanizov_wurug_jatenifekupanos_xiwodebidu.pdf
    • https://cdn-cms.f-static.net/uploads/4486535/normal_5fd64782c66e1.pdf
    • https://wufowidujexo.weebly.com/uploads/1/3/5/2/135293423/fefuraneno.pdf
    • https://static.s123-cdn-static.com/uploads/4445340/normal_600617f44daac.pdf
    • https://cdn-cms.f-static.net/uploads/4415770/normal_602170ea02111.pdf
    • https://cdn-cms.f-static.net/uploads/4478951/normal_601d98c8594e7.pdf
    • https://momimuraw.weebly.com/uploads/1/3/1/3/131384495/zowofafoviwito.pdf
    • https://static.s123-cdn-static.com/uploads/4376379/normal_5ffd2c464fc1f.pdf
    • https://lujukote.weebly.com/uploads/1/3/2/7/132712447/9893426.pdf
    • https://cdn-cms.f-static.net/uploads/4383321/normal_6034c1cfab94f.pdf
    • https://baputopozim.weebly.com/uploads/1/3/5/3/135336161/8301201.pdf
    • https://kagozekexep.weebly.com/uploads/1/3/5/9/135956698/fotawozolibogi.pdf
    • https://cdn-cms.f-static.net/uploads/4481278/normal_5fd7a698b3411.pdf
    • https://cdn-cms.f-static.net/uploads/4373782/normal_601600147cc15.pdf
    • https://kexiwiwimibip.weebly.com/uploads/1/3/1/3/131379584/favuvepeleteko-jekelobaxotemi-zoviziro.pdf
    • https://static.s123-cdn-static.com/uploads/4370547/normal_5ff80a7c719ef.pdf
    • https://wugumura.weebly.com/uploads/1/3/4/6/134601103/4a0b9.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/rebesudanolo/44431548563.pdf
    • https://s3.amazonaws.com/fexuror/aprender_japones_basico.pdf
    • https://s3.amazonaws.com/jajoxulabojaso/87428357378.pdf
    • https://s3.amazonaws.com/jedobufudajewu/langston_hughes_harlem.pdf
    • https://s3.amazonaws.com/faxaxos/twisted_fate_guide_aram.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00014829.bin
9e5bd88050412783052c84061b6b6f98030cbc81d1b3f94174ef4d7a010623b1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14829 5456 bytes
font_01_sfnt_off00015ad1.bin
7552fcba732dc1d7bd6d3805a5770399f1c547e62ba335a571ec7c95b399ba95		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15AD1 13872 bytes
font_02_sfnt_off0001883c.bin
52db30b66cfb76898988bc7c6ed152514c301740808ab95bec9c68e49df23550		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1883C 16036 bytes
font_03_sfnt_off00019ca4.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x19CA4 4324 bytes

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