Malicious PDF — malware analysis report

Static analysis result for SHA-256 25de54791bf14502…

MALICIOUS

PDF

77.4 KB Created: 2021-05-22 02:57:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 1e5d625ce846cb25d17ddfc2e6b9107f SHA-1: 25be54e3cf4bbdf5b48c0815cb64b68c64173f0e SHA-256: 25de54791bf14502aa56888718d089334e4c42e2211c30507c76e8412c6a051e
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, many pointing to Weebly and other hosting services, suggesting a link farm or redirection mechanism. The primary URL, 'https://gimoguvi.ru/strik?utm_term=how+to+borrow+money+from+cleo+app', indicates a phishing or scam attempt related to financial applications. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://gimoguvi.ru/strik?utm_term=how+to+borrow+money+from+cleo+app PDF link annotation
    • https://niliwavinifof.weebly.com/uploads/1/3/4/6/134687551/06e3d.pdfIn PDF document text
    • https://daxugukixirujin.weebly.com/uploads/1/3/4/7/134739014/lokogoguxaseg-pawulaziromesaw-rivedekaximej.pdfIn PDF document text
    • https://rebijigubewu.weebly.com/uploads/1/3/4/7/134770847/sivaxi-webowesazir-watosej-pisipogav.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379720/normal_5fcd02001408d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459337/normal_603cb7607ec69.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387410/normal_5ffc85098d431.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490949/normal_605638ef55ff5.pdfIn PDF document text
    • https://buwuwewofopalun.weebly.com/uploads/1/3/4/0/134097592/ruwimufepij.pdfIn PDF document text
    • https://fedobakeruja.weebly.com/uploads/1/3/4/3/134367732/mewunigezi-kapuxutow.pdfIn PDF document text
    • https://zejuvuvegodefi.weebly.com/uploads/1/3/1/4/131453892/3cdc3d4.pdfIn PDF document text
    • https://malufatagu.weebly.com/uploads/1/3/0/8/130874424/8143472.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/begijufadi/ruzagavumefafamekabajo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/774e2c82-f115-428b-a18e-181f0f34b698/how_many_days_it_is_till_my_birthday.pdfIn PDF document text
    • https://s3.amazonaws.com/wuzalugiseto/xagugutolajopibevige.pdfIn PDF document text
    • https://s3.amazonaws.com/megulu/shawn_mendes_stitches_video_song.pdfIn PDF document text
    • https://s3.amazonaws.com/muxozuvalubi/first_excited_state_of_hydrogen_molecule.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/735c0389-e96d-4c6f-b877-0532542fc0d3/32102520362.pdfIn PDF document text
    • https://s3.amazonaws.com/muvarelo/96900516018.pdfIn PDF document text
    • https://s3.amazonaws.com/kakef/lumafusion_2._0_user_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/kasuwevovog/26540424361.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9d6f62d7-e985-4017-8d55-22c966569f03/26102593566.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_off0000f114.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF114 5280 bytes
SHA-256: 4f28fa94cb599bc247092508a01045d0427c7b7394388c31551e2328939481ca
font_01_sfnt_off0001030c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1030C 11000 bytes
SHA-256: f80532414d9afbadb8a5fec2209f74b9203cbb59a682ba4cc184f55628779fa2

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