Malicious PDF — malware analysis report

Static analysis result for SHA-256 3abf82fae6390cb4…

MALICIOUS

PDF

50.4 KB Created: 2020-08-09 11:19:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ab523b86e2862a62b6e72d0e792a70cc SHA-1: 3c5d5c68dd9a26a047f8a5d7e04e388bd62390a6 SHA-256: 3abf82fae6390cb4dfd7ebe91b40f9f41ae158ce5699584e532437916a1aea70
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a mass external link farm, with a primary link pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the target URL and appears to be a lure related to Algerian sports news. The ML classifier strongly indicates maliciousness, and the presence of numerous links suggests an attempt to distribute malicious content or harvest credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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.cc/pify?keyword=journal+le+buteur+algerie+en+pdf
    • http://larajir.rim-foundation.org/uploads/1/3/1/4/131453284/cd02d.pdf
    • http://files.wdhicks.com/uploads/1/3/2/3/132302718/vazejekiradowo-wesefite.pdf
    • http://files.rivalsinc.com/uploads/1/3/0/7/130776401/sizuki.pdf
    • http://files.hecmaconference.org/uploads/1/3/1/4/131438313/naxaxuburuterop-motuje.pdf
    • https://cdn.shopify.com/s/files/1/0440/2744/5413/files/multistage_amplifiers_lecture_notes.pdf
    • https://cdn.shopify.com/s/files/1/0431/5008/2202/files/4202397107.pdf
    • https://cdn.shopify.com/s/files/1/0428/7689/5398/files/tebofaxajixak.pdf
    • https://cdn.shopify.com/s/files/1/0432/5382/5694/files/2011_jaguar_xf_owners_manual.pdf
    • https://cdn.shopify.com/s/files/1/0428/4016/2467/files/13274418363.pdf
    • https://cdn.shopify.com/s/files/1/0432/4923/8179/files/93260872443.pdf
    • https://cdn.shopify.com/s/files/1/0432/6578/6006/files/mugajalafusijew.pdf
    • https://cdn.shopify.com/s/files/1/0435/1361/0392/files/42248113228.pdf
    • https://cdn.shopify.com/s/files/1/0434/0655/7340/files/mossberg_500_walmart.pdf
    • https://cdn.shopify.com/s/files/1/0435/7577/1304/files/32266284300.pdf
    • https://cdn.shopify.com/s/files/1/0440/1758/2230/files/jizag.pdf
    • https://cdn.shopify.com/s/files/1/0429/9515/5105/files/57654045476.pdf
    • https://cdn.shopify.com/s/files/1/0432/6873/5140/files/nuvobutodipugir.pdf
    • https://cdn.shopify.com/s/files/1/0429/0733/6857/files/fofupekejaki.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/

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005ecb.bin
8c4106f7dd09fce333a2da84d67d9ac14f32af91095c0857898bea7f2fb96de4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5ECB 5040 bytes
font_01_sfnt_off00006ff2.bin
103a3bd7685630311f38b64a0f314752628df5b43f84b6096ddb8ba2a45ae840		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FF2 11544 bytes
font_02_sfnt_off0000949d.bin
a0b2eebfec4701c0dadafacb7be223e47babf108520fd5dd88bdee0933555a13		 pdf-font-stream PDF embedded font (sfnt) at offset 0x949D 16820 bytes
font_03_sfnt_off0000ac4b.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAC4B 4324 bytes

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