Malicious PDF — malware analysis report

Static analysis result for SHA-256 35f73bac8b17d8a6…

MALICIOUS

PDF

70.1 KB Created: 2021-02-19 21:47:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 7a1d8763a07c33dfaf543765703ec8a9 SHA-1: 9b0d15a210c44f8cbcc409b40ccb8845ecf193fb SHA-256: 35f73bac8b17d8a6b63e231fee9f4e44219fdb1b7e1c3127d18fe25e59c11e68
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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=screencast+pro+apk+free+download PDF link annotation
    • https://kevesotajomuvow.weebly.com/uploads/1/3/5/9/135959451/nifovi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4457572/normal_5ff67550152dd.pdfIn PDF document text
    • https://cdn.sqhk.co/gulanuwe/Xajaghy/red_vs_blue_fortnite_creative_map_code.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426822/normal_5fe7964684c31.pdfIn PDF document text
    • https://lepudumewo.weebly.com/uploads/1/3/5/9/135962044/gesasotezipa-zekekefobetul-dirarani-wabejirofovon.pdfIn PDF document text
    • http://dream-stat.ru/psicologia_anormal_irwin_sarasonqtr5n.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421339/normal_6027583c9070b.pdfIn PDF document text
    • https://cdn.sqhk.co/kunimanujage/gfIij09/mufamewigufi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384632/normal_5fe773f269649.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426942/normal_5feff1ede2c99.pdfIn PDF document text
    • https://cdn.sqhk.co/xolanikipiz/gTldNyD/legion_td_guide_wc3.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/dowavelaxam/anemia_treatment_guidelines_canada.pdfIn PDF document text
    • https://s3.amazonaws.com/zifilobesumafi/jedefukuzisul.pdfIn PDF document text
    • https://s3.amazonaws.com/kudefem/tigalabumakopusonuzukixu.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_off0000ca55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA55 5148 bytes
SHA-256: 65050f44a139c98b21fa8fb8da07515179b8ceb62ff1df3fe2c004b49958bc13
font_01_sfnt_off0000dbe9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBE9 9748 bytes
SHA-256: bc22220f277600ef37d1bc5a9cc7f4c92425c08c0018cd64f5a28cd2e6d551f7
font_02_sfnt_off0000fd4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD4B 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f