Malicious PDF — malware analysis report

Static analysis result for SHA-256 3603f370edbcceee…

MALICIOUS

PDF

87.5 KB Created: 2021-05-31 07:01:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7ac330f55a6056fc654ac05ad815d266 SHA-1: 800aecad23b250c0ed29c936e8d54e5746db1e07 SHA-256: 3603f370edbcceeee94e0de393fb82e87078faa8e27dc516671c7f0fa25a3ba4
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, as malicious. It contains a significant number of external links, many pointing to Weebly-hosted PDFs, suggesting a link farm or redirection mechanism. The embedded URLs likely serve to direct users to malicious content or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9967

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/123?utm_term=kathi+video+songs+hd
    • https://werafapotavide.weebly.com/uploads/1/3/0/9/130969473/6dba4.pdf
    • https://gubetixe.weebly.com/uploads/1/3/4/3/134314982/381936110506a14.pdf
    • https://damexizatu.weebly.com/uploads/1/3/4/7/134736049/c07843.pdf
    • https://libazuzed.weebly.com/uploads/1/3/1/4/131410812/2661795.pdf
    • https://tedovuja.weebly.com/uploads/1/3/4/4/134465286/rofukopa.pdf
    • https://cdn-cms.f-static.net/uploads/4379719/normal_6009f4b3a69c3.pdf
    • https://lujajumivovun.weebly.com/uploads/1/3/0/7/130776132/samojoxogazaxelulux.pdf
    • https://cdn-cms.f-static.net/uploads/4478387/normal_60517b05333ef.pdf
    • https://pilazelade.weebly.com/uploads/1/3/5/3/135397465/vedexeri-mixogaw-zebeditasobof-fekuna.pdf
    • https://widufosonetorif.weebly.com/uploads/1/3/4/5/134598319/fiwovepariz_nokokat_tifewug.pdf
    • https://static.s123-cdn-static.com/uploads/4492593/normal_6008d5720d924.pdf
    • https://xoxomupufolud.weebly.com/uploads/1/3/0/9/130969418/texirerumopifilop.pdf
    • https://cdn-cms.f-static.net/uploads/4373987/normal_6016ec21b3922.pdf
    • https://cdn-cms.f-static.net/uploads/4390068/normal_6019386e014f5.pdf
    • https://cdn-cms.f-static.net/uploads/4392860/normal_60205209a7797.pdf
    • https://cdn-cms.f-static.net/uploads/4471985/normal_6063584c97f5d.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/e3be2de7-a7e4-4bfb-9047-40c555ff3c94/zixugojuwemugejizosiloke.pdf
    • https://uploads.strikinglycdn.com/files/4d9e24af-8e69-4b6d-86a8-814bc8f1f243/13641761120.pdf
    • https://uploads.strikinglycdn.com/files/72211c0a-8e7d-40c2-9c71-4c1c38c5ace7/23003432604.pdf
    • https://uploads.strikinglycdn.com/files/4238eecd-70a2-4432-8a90-4618ae63427d/suzizofip.pdf
    • https://uploads.strikinglycdn.com/files/e1815fd0-80f7-495d-bcfc-ea7e5fbde91a/xofozomajijatubapares.pdf
    • https://uploads.strikinglycdn.com/files/147bac2d-9923-411d-bf8a-8a7937e62fde/leyenda_del_hijo_de_la_luna.pdf
    • https://uploads.strikinglycdn.com/files/a5c7d273-f03f-40fa-aa7c-bf12d080ff46/block_diagram_reduction_technique_problems.pdf
    • https://uploads.strikinglycdn.com/files/a271320c-4658-4faa-8a0d-63331cbe2ccc/pobiwajumavemivanokirof.pdf
    • https://uploads.strikinglycdn.com/files/613b4fb2-d843-4b59-aca6-5df810840c97/79789283941.pdf
    • https://uploads.strikinglycdn.com/files/d486ad37-38db-4cac-92df-ccd2318a0e8b/suradenowinufu.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000118d2.bin
351da9a668d50ed7edc123472fde2fdb67de158d728658b1b3986a8291151ccd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x118D2 4988 bytes
font_01_sfnt_off000129d8.bin
01f4fbca21fb6d9f098ac3bc154e8a4e8e8ad1e3d245dbb0f79544f54939e045		 pdf-font-stream PDF embedded font (sfnt) at offset 0x129D8 11544 bytes

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