Malicious PDF — malware analysis report

Static analysis result for SHA-256 11347570b6c7370f…

MALICIOUS

PDF

70.9 KB Created: 2021-03-05 06:51:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 35c7031e04071f4d11970f18ce2ce04b SHA-1: 9893200e64481a39e3364c5b9b5c380e49847f07 SHA-256: 11347570b6c7370ff3e68cbead32cf22c4b1afe0fd7fa216ff36be12bc19b22e
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://pelibifir.ru/award?keyword=free+printable+fraction+strips+pdf PDF link annotation
    • https://toripifisesu.weebly.com/uploads/1/3/4/3/134367164/rinenajekugunopuza.pdfIn PDF document text
    • http://voseboler.iblogger.org/41502235728.pdfIn PDF document text
    • https://loloxemevo.weebly.com/uploads/1/3/0/7/130739498/1385429.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393349/normal_5ffe814e9c92b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393353/normal_5ffe02627c8ee.pdfIn PDF document text
    • https://xewulowew.weebly.com/uploads/1/3/4/7/134757629/xagakugi_dibevenevebub_repuruxiler_jevog.pdfIn PDF document text
    • https://petenugilamabo.weebly.com/uploads/1/3/1/4/131453278/49467530.pdfIn PDF document text
    • https://nufazuxumojo.weebly.com/uploads/1/3/2/8/132815750/8baea13e3fea.pdfIn PDF document text
    • https://titumakusijuvap.weebly.com/uploads/1/3/4/3/134353199/jafuv-fikizawirikiz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://3c86e5df-9a55-47dd-9d5b-c207b25ec6cd.filesusr.com/ugd/72bf36_e194a76bf861482ab9df3c474bcd7651.pdf?index=trueIn PDF document text
    • https://ad9f1622-e3b7-49db-bfef-326c48fb2104.filesusr.com/ugd/a467d2_c932a1a5ea96476ab44576d373aa36b9.pdf?index=trueIn PDF document text
    • http://kiwimusef.epizy.com/66349529951.pdfIn PDF document text
    • https://cf176ec6-4820-456b-adf9-61e5f06c968f.filesusr.com/ugd/43d598_64271d4c58b7434d876acc1b439b5508.pdf?index=trueIn PDF document text
    • https://711920be-b761-4f0e-a604-762b26663b16.filesusr.com/ugd/ffcbea_a190832c82734d3fb4ffecc3f776a05e.pdf?index=trueIn PDF document text
    • https://9eaa565e-fb97-40b4-b096-d6760803f699.filesusr.com/ugd/55e2c6_d814d70ae5624e8b91d32fd70295848d.pdf?index=trueIn PDF document text
    • https://8dfd47f4-e591-4377-92a3-bdbf91d41e5a.filesusr.com/ugd/a58b01_3a02cf9202b24560ba647833e5ee6abf.pdf?index=trueIn PDF document text
    • http://newubopuga.epizy.com/dumibanugijujawotal.pdfIn PDF document text
    • http://bisapejavi.epizy.com/how_to_actively_listen_reddit.pdfIn PDF document text
    • https://7b6eef9a-7352-448c-8e80-911c5f2e1c0b.filesusr.com/ugd/f34323_311d17c87beb42229c6e7847aba7325c.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_off0000da19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA19 5244 bytes
SHA-256: 27ddf2307d0888c63c5f97116cb4fd7c6d90f1bf9dbd6a6ef58db5628af2731a
font_01_sfnt_off0000ebf7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBF7 9992 bytes
SHA-256: ab40a02b6d468b6d41e69b0dc81cd1afd18f43ba6159f3a60a5f27e9ad44cfc2

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