Malicious PDF — malware analysis report

Static analysis result for SHA-256 10fe764423c10e18…

MALICIOUS

PDF

102.1 KB Created: 2020-08-28 07:30:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: adb88e2e63981691c3e3dfbeb16eb184 SHA-1: 6e2fe6aae508f32c30bdbe552d50dec6e9752c74 SHA-256: 10fe764423c10e182b8679396bc647698453e7e65bef158679290c690accaba2
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded links, with one pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text that appears to be a book title, likely a lure. The presence of numerous PDF links, many hosted on Shopify, suggests a link farm intended to obscure the malicious redirector. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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.ru/pify?keyword=libro+de+pablo+escobar+gaviria
    • http://files.oliverflude.com/uploads/1/3/1/6/131607164/marowisomilipezepa.pdf
    • http://files.ww-wares.com/uploads/1/3/0/7/130776644/zomuvelisidevuj-pewinudot.pdf
    • http://files.lcaclassicalhistory.com/uploads/1/3/0/7/130775520/0e51716f741b7a5.pdf
    • http://riwasuni.bentofamilylaw.com.au/uploads/1/3/1/6/131606881/4e1581.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0431/1482/3844/files/zumofobajotimuxidebir.pdf
    • https://cdn.shopify.com/s/files/1/0435/7462/4419/files/puro_sand_2.pdf
    • https://cdn.shopify.com/s/files/1/0431/3110/9540/files/selife.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mefiwi.pdf
    • https://cdn.shopify.com/s/files/1/0464/6676/0856/files/625677066.pdf
    • https://cdn.shopify.com/s/files/1/0434/6275/4461/files/56132551257.pdf
    • https://cdn.shopify.com/s/files/1/0434/5105/6295/files/64604652112.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/2128194791.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00014185.bin
63efadec088dadcdb207068e9daf45e4f3ddb82f7e8c9c6210d365d3345cf003		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14185 4984 bytes
font_01_sfnt_off0001527d.bin
b7cf22ce8cfcef619334c93ab986664b530a67f0fc2ec94cbb9d45b91597dc05		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1527D 12968 bytes
font_02_sfnt_off00017b8d.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x17B8D 4324 bytes

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