Malicious PDF — malware analysis report

Static analysis result for SHA-256 a02054e69bfa29bd…

MALICIOUS

PDF

44.5 KB Created: 2020-08-28 02:20:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c041855432cdd8289b6fb7880c567b44 SHA-1: d9facc94820f025066ed002c17464a10cf687231 SHA-256: a02054e69bfa29bd315279e772ecf5da82833ebd0018c9c179fe0f85e6da4b7a
150 Risk Score

Malware Insights

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

The PDF contains a lure for a "Fallout 4 guide book pdf" which, when clicked, directs to a malicious URL. The PDF also contains a large number of embedded links, many pointing to Shopify domains, likely as part of an SEO link farm to improve search engine ranking for malicious content. The ML classifier strongly indicates maliciousness, and the redirector link is a critical indicator.

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.link/pify?keyword=fallout+4+guide+book+pdf
    • http://files.stridesports.net/uploads/1/3/0/7/130775137/2516e7.pdf
    • http://tofovuvud.hideawaycampsites.com/uploads/1/3/1/4/131453574/gajor.pdf
    • http://files.cavitesports.com/uploads/1/3/0/7/130775137/dotupopeve.pdf
    • http://solami.spokenhot.com/uploads/1/3/1/3/131383483/554c32467.pdf
    • https://cdn.shopify.com/s/files/1/0427/8799/5814/files/binos.pdf
    • https://cdn.shopify.com/s/files/1/0430/0311/7719/files/febesomokixalofubodiw.pdf
    • https://cdn.shopify.com/s/files/1/0439/1626/3592/files/sushil_kumar_building_construction_free.pdf
    • https://cdn.shopify.com/s/files/1/0441/1126/5944/files/45687700475.pdf
    • https://cdn.shopify.com/s/files/1/0430/9755/5108/files/xigiragovigexunat.pdf
    • https://cdn.shopify.com/s/files/1/0428/0067/7031/files/42099913115.pdf
    • https://cdn.shopify.com/s/files/1/0429/5180/3033/files/adrenal_crisis_treatment.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000062f6.bin
efd2a77044474f68811e7d4d78240487172b2cfecca1d15f88ec852fc1cda7de		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62F6 4956 bytes
font_01_sfnt_off000073eb.bin
a5851640c45ded951692818a3d4123fdd1fe98afe0fcc6a8c3d5b95eb1defdad		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73EB 10408 bytes
font_02_sfnt_off00009772.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9772 4324 bytes

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