Malicious PDF — malware analysis report

Static analysis result for SHA-256 9844bbbdb1b08b66…

MALICIOUS

PDF

69.8 KB Created: 2021-02-14 01:13:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 9068e9a25abc5ff5f3ba66ab3c633f7b SHA-1: 564f03fdd733b689c26c844d9140e70b50c18947 SHA-256: 9844bbbdb1b08b66b1c0d8eece644713b70303cb7895fe1fc5fabe63740cd63a
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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://jottigo.ru/wix?keyword=biology+chapter+12+molecular+genetics+worksheet+answers PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4383792/normal_5fc647ed15785.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366036/normal_600c66a0a7b8c.pdfIn PDF document text
    • https://cdn.sqhk.co/xemugugafot/fIrYna2/download_piano_tiles_2_for_windows_7.pdfIn PDF document text
    • https://motetokazifizi.weebly.com/uploads/1/3/4/8/134885494/dced3c4ae.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411219/normal_5ff6584070437.pdfIn PDF document text
    • https://cdn.sqhk.co/kitujesijak/jfgigeu/fonts_download_free_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/guzunilepin/GgjVjaV/r_b_music_2018_new_songs.pdfIn PDF document text
    • https://zodemabu.weebly.com/uploads/1/3/4/8/134896511/9851429.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4493891/normal_601a1bd32293f.pdfIn PDF document text
    • http://jigatinapa.22web.org/c_i_d_episode_1135.pdfIn PDF document text
    • https://xirabefutabo.weebly.com/uploads/1/3/5/3/135323672/a75e3869974.pdfIn PDF document text
    • https://vafarisitoguv.weebly.com/uploads/1/3/0/8/130874489/a7de2c91.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424378/normal_5fc615410f05d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bulujulu.rf.gd/bt_business_hub_6_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/vibasujefir/86068378001.pdfIn PDF document text
    • https://s3.amazonaws.com/lolaritemukole/jowevexobil.pdfIn PDF document text
    • http://siwojanapav.epizy.com/tedagabiwifo.pdfIn PDF document text
    • https://s3.amazonaws.com/sefipa/powow.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d499.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD499 5840 bytes
SHA-256: f50b506d24fddeb74ad3f44ed5650186ff54c36acd9cdbbefb130200dcbd8a0b
font_01_sfnt_off0000e870.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE870 9764 bytes
SHA-256: e8132b42000149108649ebc1d06bc71ea89effb30514d71e0739ef5f0c545d10