Malicious PDF — malware analysis report

Static analysis result for SHA-256 a86acbf8f54cbc04…

MALICIOUS

PDF

31.3 KB Created: 2020-04-10 16:14:13 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 9ee97a4dbb70f5839aa26985b50edafe SHA-1: af98748d5a463b724618b2323a7e512c7c237e0c SHA-256: a86acbf8f54cbc045931598199a96e5a10b489cbb0cacba5d17d7814b3133666
70 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to other PDF files hosted on various domains. This pattern is indicative of a link farm designed to obscure the true malicious intent. The presence of a "download button" heuristic further supports the idea that the document is intended to trick the user into clicking these links. The document body contains a truncated "download" lure, reinforcing this conclusion.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://deliriodimenina.com/uploads/1/3/1/3/131384635/131384635.html#tu+kitni+achhi+hai+mp4+video+downloa
    • http://modernproductsolutions.com/uploads/1/3/0/7/130775959/bosoloraz-gaxuxolawem.pdf
    • http://doulosacademy.org/uploads/1/3/0/6/130621642/pexogabog-tozikugoga-kunusaju-nokete.pdf
    • http://ssquaredesign.com/uploads/1/3/0/8/130813630/bofuk.pdf
    • http://sharingfamilymemories.org/uploads/1/3/1/3/131379844/1202544.pdf
    • http://allaurora.club/uploads/1/3/1/4/131454656/xoxagefoka.pdf
    • http://foreverhalal.store/uploads/1/3/1/3/131379844/sawij.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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000528d.bin
11c119c5b7ae736314c233b5a3bfcfa9e5edb38d9aa478eeb3d1114ef02411f1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x528D 7696 bytes

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