Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa0b12308e692199…

MALICIOUS

PDF

73.0 KB Created: 2021-02-18 09:16:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 9835405a139a92119727e86bfc882e6b SHA-1: 502ca31f4dcf58f7ce397ba0cd81518b3ca8be88 SHA-256: fa0b12308e692199e6ecde69dda2ee4123b9fd1b945d17c7e6f3553d2da7dffb
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://jacksth.ru/wix?keyword=hy+tran+ultra PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4449615/normal_5fdeba407ea4b.pdfIn PDF document text
    • https://vezorobabuwej.weebly.com/uploads/1/3/0/9/130969079/538114f54.pdfIn PDF document text
    • http://crawlmqyu.space/infectious_mononucleosis_testing_guidelinesn7y57.pdfIn PDF document text
    • https://cdn.sqhk.co/virurewev/dgh7jxd/sebev.pdfIn PDF document text
    • https://cdn.sqhk.co/sofetarunox/6pIJjfc/best_men_s_shoes_2020_uk.pdfIn PDF document text
    • http://zzzmmmmejjj.space/us_army_tank_gunnery_manual4093h.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413223/normal_5ffc3a55e5a0d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446270/normal_5fd091688ae67.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380887/normal_5fd0fe8d9bc3e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407576/normal_60121517767df.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380867/normal_6022189f965f7.pdfIn PDF document text
    • https://cdn.sqhk.co/putuziboki/msjhw4Q/jejemuduwukizujulopa.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
    • 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_off0000d445.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD445 4172 bytes
SHA-256: e997540d56a8d84fb17cb6cf2d78b4801f4f85a81d40c2cfb27f8943d89e7fdd
font_01_sfnt_off0000e25a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE25A 11892 bytes
SHA-256: 1dae3684def2eac05fa3ce0a1383d64434d91a91944d8ec023af72266b35f990
font_02_sfnt_off00010976.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10976 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34