Malicious PDF — malware analysis report

Static analysis result for SHA-256 58c2b646777138c4…

MALICIOUS

PDF

66.8 KB Created: 2021-03-08 02:48:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 5114f050524268b1c2f69fbc45e56cfa SHA-1: 8ec7050e5b17dfa4ca7b3d6991b27253b107440d SHA-256: 58c2b646777138c4aa1dbdeb55ab85dbd8b2924dd277a1dbea8f8db0b91812be
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was identified as malicious by ClamAV and an ML classifier. It contains a large number of external links, indicating it functions as a link farm. The primary URL, 'https://maypoin.ru/wix?keyword=fake+gps+go+apk+mirror', suggests a lure related to fake GPS applications, potentially leading to phishing or malware downloads. The document structure and numerous disposable hosting links further support its malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://maypoin.ru/wix?keyword=fake+gps+go+apk+mirror PDF link annotation
    • https://damemerivojed.weebly.com/uploads/1/3/4/3/134378109/ribopadajow-gojetemuzo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4444884/normal_5fe267c9df7ee.pdfIn PDF document text
    • https://kafunonedejo.weebly.com/uploads/1/3/4/6/134662894/daboxaj-fazexew-tuwaki-risizemipen.pdfIn PDF document text
    • http://fruit-ita.fun/how_to_keep_paper_shredder_from_overheatingrbavj.pdfIn PDF document text
    • http://freshmind.net/fetaxenuxaniteziwalizepajxzkg5.pdfIn PDF document text
    • http://redpandarecycling.com/askep_space_occupying_lesionl040m.pdfIn PDF document text
    • http://hookup666.site/871254944608nfcc.pdfIn PDF document text
    • https://zapedumukovig.weebly.com/uploads/1/3/0/7/130775012/076ad4c0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464878/normal_603810f5b96fa.pdfIn PDF document text
    • https://bifukedupojuxi.weebly.com/uploads/1/3/4/4/134498794/bodefoturoz-femifigitu-rukukolan-waguvofotu.pdfIn PDF document text
    • https://kemebawe.weebly.com/uploads/1/3/5/3/135313751/24df22.pdfIn PDF document text
    • https://genebametujo.weebly.com/uploads/1/3/4/9/134904617/kapopab-nipofurawirixer.pdfIn PDF document text
    • https://zizetorusiwewiw.weebly.com/uploads/1/3/5/9/135990502/6169099.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://8964868a-aef6-4da0-9a9b-29de7c28e0c5.filesusr.com/ugd/b910ae_9759207a4dd14ab8b6b463ecd4a23f6d.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/nuxulikiwab/rpg_maker_vx_ace_sprite_template.pdfIn PDF document text
    • https://ca30e0e0-ecf2-44ab-b6a2-fe26291458be.filesusr.com/ugd/34e21e_809403366bf84c6da06422f4fad9fe36.pdf?index=trueIn PDF document text
    • https://46c0acaa-de7d-4f46-84f0-c2cf1d8ff7d9.filesusr.com/ugd/ac1638_82804b4540844675909282c0a528b29b.pdf?index=trueIn PDF document text
    • https://abaaaae4-9231-44fc-b12c-ad55ebcc68e7.filesusr.com/ugd/2ca09c_a1028a609f984ba99e150c683a9864a0.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/jupoti/magumuzetusetikevir.pdfIn PDF document text
    • https://s3.amazonaws.com/sulasatevirexo/affidavit_of_personal_knowledge_of_marriage.pdfIn PDF document text
    • https://s3.amazonaws.com/benubapopikaj/45047489936.pdfIn PDF document text
    • https://b9e1b105-38e0-4bbf-baad-90de1e2021e1.filesusr.com/ugd/432b07_3c289be3395945e38672c68091dbdf0a.pdf?index=trueIn 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_off0000ca2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA2B 5124 bytes
SHA-256: a67ec608ee4812fc727690877104497bb77e4714ede7a96a34c5abffb6799541
font_01_sfnt_off0000db92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB92 10096 bytes
SHA-256: e1a12559761f4fd4d970e1bb2094d3c49c1abe9bf40400b03dfe02f97a10b391