Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d186899a3932bc7…

MALICIOUS

PDF

73.4 KB Created: 2020-10-29 17:47:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 46c9ccf406138729d44980749a3b8690 SHA-1: d88f0df047ff5995cc8c0ec2d3d35da7dd807b3a SHA-256: 5d186899a3932bc7a4056b5d31829123705dc349da0ce1fcd96ce7535cc03506
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 1.0000

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://ttraff.me/123?keyword=chancellor%2527s+list+ucr In PDF document text
    • https://rosuxemu.weebly.com/uploads/1/3/0/7/130776582/df2d17c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376103/normal_5f96349b9b728.pdfIn PDF document text
    • https://xogexemufak.weebly.com/uploads/1/3/1/4/131437987/kabefovewuduri.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404103/normal_5f9a5118db730.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/mijedusovineti/zivoti.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files/dna_polimerasa.pdfIn PDF document text
    • https://s3.amazonaws.com/tesotiwapax/96349008105.pdfIn PDF document text
    • https://s3.amazonaws.com/gotenukevepunin/rifts_game_masters_guide_download_free.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/emotional_intelligence_development_plan.pdfIn PDF document text
    • https://s3.amazonaws.com/ragejufa/65893933008.pdfIn PDF document text
    • https://s3.amazonaws.com/wunupalezozerud/80155617570.pdfIn PDF document text
    • https://s3.amazonaws.com/fulosobezur/film_acting_tips.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 2

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d05a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD05A 4828 bytes
SHA-256: d197ed86d96c561ad250537e1aae63c5d7b5295be7798e38a48bdf763e3a5723
font_01_sfnt_off0000e0b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0B7 12540 bytes
SHA-256: 25abcd85f56dbb04c949523c334277ee7055052ff0afb53fd4583ae8f4e1c9b6
font_02_sfnt_off00010a75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A75 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

Open this report in the interactive analyzer, or submit your own file for analysis.