Malicious PDF — malware analysis report

Static analysis result for SHA-256 209a22d39d379d14…

MALICIOUS

PDF

51.3 KB Created: 2020-10-30 20:11:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 2f7943cee407515d74e2be53a88ba86f SHA-1: 95a0b888eff1152c1c681b36912162ae8e001343 SHA-256: 209a22d39d379d14dc461d4593e4adabb3457c93182562e395ba7c0d581ad567
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://ggtraff.ru/strik?keyword=dragonball+episodes+guide In PDF document text
    • https://sabidodavo.weebly.com/uploads/1/3/1/4/131408103/devoxiluputigu-vobegikuj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369656/normal_5f89021dc38a8.pdfIn PDF document text
    • https://kazofinuso.weebly.com/uploads/1/3/4/3/134369681/bilow.pdfIn PDF document text
    • https://sevanilab.weebly.com/uploads/1/3/1/4/131437268/tosapagoruxisojovi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369179/normal_5f9c476796a4a.pdfIn PDF document text
    • https://xojerajap.weebly.com/uploads/1/3/1/3/131384359/nerato_dedamelaniris_majokugotigoj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413017/normal_5f9462d94da91.pdfIn PDF document text
    • https://koxarakofawel.weebly.com/uploads/1/3/4/3/134310925/da7c4953.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387046/normal_5f9c44d063e20.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://cdn.shopify.com/s/files/1/0500/2438/2634/files/borderlands_2_king_mong_drop_rate.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/4364/6357/files/doxevidirixi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0806/4677/files/medikixew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/5702/0565/files/surozetexonexijaze.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007dc8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DC8 5068 bytes
SHA-256: 197dd991744a8942e18e0ddb1edcc3670981490112d79fa2f43b8880cc491314
font_01_sfnt_off00008efc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EFC 10548 bytes
SHA-256: 8bd40db1830848a7c23f3adc20769987ee9f5e273f9fe3bae38dbf527d58d00b
font_02_sfnt_off0000b2a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB2A5 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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