Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9f58e60d5480120…

MALICIOUS

PDF

74.3 KB Created: 2021-05-23 12:52:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: f226c9301b53fe774c874fd7c6036e8f SHA-1: 52cb2357fc0a2e3b9565694948957bc0dd8d6426 SHA-256: a9f58e60d5480120c8634ab52d0bcc54753820a155de594ef0a04df5181bc8de
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many pointing to other PDF files, suggesting a link farm or phishing lure. The primary URL, https://jumiwimov.ru/strik?utm_term=cat+and+dog+2+movie+download+in+hindi+480p, is likely part of a phishing campaign attempting to trick users into downloading malicious content. ClamAV and ML classifiers also flagged this PDF as malicious, specifically as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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=cat+and+dog+2+movie+download+in+hindi+480p PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4384832/normal_5fd1bc3836884.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389085/normal_5fec057b46b77.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446264/normal_606a12d704067.pdfIn PDF document text
    • https://pejeronasoko.weebly.com/uploads/1/3/2/6/132682646/sujogena.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426828/normal_601f16802906c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454966/normal_60010b3ef3b2e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465249/normal_603ee07eb1bf5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456728/normal_60615c066dcd8.pdfIn PDF document text
    • https://sazotavivi.weebly.com/uploads/1/3/1/1/131164406/fevimanale_tonigibifanid_xonojijata_repur.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464082/normal_5fe63bb5cc470.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381095/normal_603e5819eb015.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418399/normal_6047d3761aab6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470962/normal_5fdc6fd3bb651.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/badodemebo/vumesesipesono.pdfIn PDF document text
    • https://s3.amazonaws.com/pibajuwi/tarinuzefokalibukixugel.pdfIn PDF document text
    • https://s3.amazonaws.com/tiduro/borutedub.pdfIn PDF document text
    • https://s3.amazonaws.com/jafujasiwetid/2_inch_binder_spine_template.pdfIn PDF document text
    • https://s3.amazonaws.com/jobavo/91717291437.pdfIn PDF document text
    • https://s3.amazonaws.com/mokixetat/acorn_180_stairlift_service_manual.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d685.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD685 5616 bytes
SHA-256: 560d43ca6d893b439fe3692bbd93bc4a2b03c60188eca4f4e50a53bef170d126
font_01_sfnt_off0000e99b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE99B 10680 bytes
SHA-256: 51fea9e740b2141d7922b74710770616ef179188b6162d6cbf4f4e7130940b25
font_02_sfnt_off00010ddc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DDC 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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