Malicious PDF — malware analysis report

Static analysis result for SHA-256 98c45647d0e2b2cb…

MALICIOUS

PDF

69.1 KB Created: 2021-05-19 21:40:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: ffd0260f86d5f2f8c389f38ba856753a SHA-1: 4a523c9fc7d1dab7ecf69c2ba103e39e12bdb7d9 SHA-256: 98c45647d0e2b2cbfafdd2fc126b712d1d13972b7b3e50647d32da281b5fd081
156 Risk Score

Malware Insights

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

The PDF file contains a heuristic indicating it is part of a link farm, with numerous external links. One prominent URL, 'https://jumiwimov.ru/strik?utm_term=how+can+i+check+my+kamyab+jawan+application+status', suggests a phishing lure related to an application status check. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • 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.
  • 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=how+can+i+check+my+kamyab+jawan+application+status PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4385230/normal_6046ffc5d9d61.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489440/normal_606cdbe13d9ce.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416932/normal_5fc876bbbfedc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422134/normal_5fee867f8b128.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371788/normal_5fe77cf2350ed.pdfIn PDF document text
    • https://dofazodasi.weebly.com/uploads/1/3/0/8/130873943/79f955.pdfIn PDF document text
    • https://vuzigalami.weebly.com/uploads/1/3/5/9/135960382/391053.pdfIn PDF document text
    • https://fuvapele.weebly.com/uploads/1/3/0/7/130738919/6110511.pdfIn PDF document text
    • https://vizefibamoraxob.weebly.com/uploads/1/3/4/6/134613498/bojamujokose.pdfIn PDF document text
    • https://losebevaxefot.weebly.com/uploads/1/3/5/3/135347065/fc875.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457573/normal_602197853403b.pdfIn PDF document text
    • https://tugalebuwe.weebly.com/uploads/1/3/4/0/134012885/tijadebodeg-wenoge.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494681/normal_60112629ab22f.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/146da643-a7e7-4b34-8fba-ca4620ece1dd/siduzewes.pdfIn PDF document text
    • https://s3.amazonaws.com/nafibanefexex/15589232910.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8516b5bd-09e0-412b-8206-8edb86c7e2f5/ikea_malm_bed_frame_full_instructions.pdfIn PDF document text
    • https://s3.amazonaws.com/boduxatavepe/67209603012.pdfIn PDF document text
    • https://s3.amazonaws.com/mokamoba/certificate_of_incumbency_hong_kong_template.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ee2d63db-df0f-4496-9d6f-9430e9197e9f/48218600130.pdfIn PDF document text
    • https://s3.amazonaws.com/ratixifo/icarly_interesting_meme_template.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/197ce180-33c6-46b8-9941-8208bb567c21/dd_dark_sun_creature_catalog.pdfIn PDF document text
    • https://s3.amazonaws.com/xunilukegez/36257778366.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_off0000d1ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1AE 5512 bytes
SHA-256: a6206ec80ee6a918a60154f76984b0be2bd85d394978d4e208581a773951d45f
font_01_sfnt_off0000e463.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE463 10000 bytes
SHA-256: 3615f298aebd5d1839bd46e5b56567c4ea0bcd3db914d5ad1c791d3991e6d1fd

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