Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ab0a8b95a3b1e5c…

MALICIOUS

PDF

60.6 KB Created: 2020-08-14 09:16:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4444e5c59459c91549ef77df4c3b530f SHA-1: 30e4fba30f3cf392879baba791b111fa58ca8835 SHA-256: 8ab0a8b95a3b1e5ca8745bb8d3e9cd6ee7ccea126ce5edecfb1c8d648f564768
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to ttraff.ru. It also exhibits characteristics of a PDF link farm, with numerous links to external PDFs hosted on Shopify. The document body, though heavily obfuscated, contains the same URL found in the redirector link, suggesting an attempt to lure users to malicious content.

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.ru/pify?keyword=bronica+camera+information
    • http://tosovuxap.parsonsmanor.com/uploads/1/3/1/4/131406717/883e09865d.pdf
    • http://files.steptemecula.org/uploads/1/3/1/3/131398069/vudinagugek.pdf
    • http://tamavedi.naimahusseini.de/uploads/1/3/1/4/131438641/pixujuzoj.pdf
    • http://files.fortykes.net/uploads/1/3/2/3/132302916/8116921.pdf
    • http://files.wendywangauthor.com/uploads/1/3/1/4/131454297/wagafo.pdf
    • https://cdn.shopify.com/s/files/1/0431/3848/2332/files/61729184650.pdf
    • https://cdn.shopify.com/s/files/1/0429/2712/8735/files/3997197151.pdf
    • https://cdn.shopify.com/s/files/1/0428/2286/0966/files/pavep.pdf
    • https://cdn.shopify.com/s/files/1/0430/6331/2533/files/53390409214.pdf
    • https://cdn.shopify.com/s/files/1/0436/3714/5753/files/8899599678.pdf
    • https://cdn.shopify.com/s/files/1/0446/9365/1610/files/41847855436.pdf
    • https://cdn.shopify.com/s/files/1/0440/2115/3957/files/92014017646.pdf
    • https://cdn.shopify.com/s/files/1/0432/8115/4198/files/fozisib.pdf
    • https://cdn.shopify.com/s/files/1/0431/2439/2087/files/lorakedezupevixi.pdf
    • https://cdn.shopify.com/s/files/1/0437/8558/4801/files/mabaguj.pdf
    • https://cdn.shopify.com/s/files/1/0427/5362/2182/files/ashrae_standard_34_espaol.pdf
    • https://cdn.shopify.com/s/files/1/0431/9684/2142/files/juwaxewo.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_off000091de.bin
06dba73758a60a586bcc7bb6a24629f8e3d880c5b2079927875ecf325740f256		 pdf-font-stream PDF embedded font (sfnt) at offset 0x91DE 9156 bytes
font_01_sfnt_off0000b04b.bin
a99672c801798be96652f6bbb551ccba2d162ed5e79df350e2b871b044450dff		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB04B 4864 bytes
font_02_sfnt_off0000c0ba.bin
c1f854d768f28edf506d20decfdde9340afe7752937786c7c6a1a76a4f41b8de		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC0BA 10048 bytes

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