Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b6d1ba57af1205b…

MALICIOUS

PDF

72.7 KB Created: 2020-12-25 22:06:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: e4cc6c14fd961f2890a2d0f107c2c2a6 SHA-1: 0fd4ff19f12eef08778444c964820310615741c0 SHA-256: 6b6d1ba57af1205b03b35f815f88830a4510000365389c35d7fe47c19866995f
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://gettraff.ru/strik?utm_term=driving+school+sim+mod+apk+1.+0.+3 In PDF document text
    • https://joxunirefebemi.weebly.com/uploads/1/3/4/3/134319414/6c48ca419.pdfIn PDF document text
    • https://xomevore.weebly.com/uploads/1/3/4/3/134346529/6656f966.pdfIn PDF document text
    • https://zizusufake.weebly.com/uploads/1/3/4/6/134646877/2440651.pdfIn PDF document text
    • https://rafowatixi.weebly.com/uploads/1/3/0/8/130874563/joxobiwoz.pdfIn PDF document text
    • https://tezadogiva.weebly.com/uploads/1/3/4/5/134522012/4801137.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/fifuto/riddle_school_unblocked_2.pdfIn PDF document text
    • https://s3.amazonaws.com/gosete/8331564936.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3226cfaf-092e-4a6a-a851-693fe2122748/hitman_absolution_dlc_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6318e02e-f2ff-4160-87e1-4e2692868fa9/kegos.pdfIn PDF document text
    • https://s3.amazonaws.com/jozetej/narabakidugoneg.pdfIn PDF document text
    • https://s3.amazonaws.com/podawakumepewez/c_d_heater_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/rawesaragegugar/91252307537.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/62ec8649-5b6f-496e-b89e-9e09db578825/wiseguy_tv_show_theme_song.pdfIn PDF document text
    • https://s3.amazonaws.com/xotomisen/9364774883.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dd01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD01 6000 bytes
SHA-256: f98ae62b1ad4f3a93c42d516dc0b979712def62eedffcaf635aaa04cc13d98da
font_01_sfnt_off0000f162.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF162 11044 bytes
SHA-256: 8655bc5cc8b981d77d1bf5d92009d9fe50396e5797404e354060f18744c735cf

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