Malicious PDF — malware analysis report

Static analysis result for SHA-256 3abfecb7fe4397d7…

MALICIOUS

PDF

33.8 KB Created: 2020-08-14 09:42:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7a691507d9011889f0785f0477eaa404 SHA-1: 8fd2d12d5d5a03f7493589a874525ef1b44fe9c7 SHA-256: 3abfecb7fe4397d7e3fd7b2683daa44187a2827b6efed92de2eac16b061ee2d4
120 Risk Score

Malware Insights

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

The PDF was identified as a malicious redirector and a link farm. It contains numerous links to external PDFs, with the primary malicious link pointing to 'https://ttraff.ru/pify?keyword=abstract+the+art+of+design++legendado'. This suggests the document's purpose is to lure users through SEO-optimized links to potentially malicious or deceptive content. No scripts were extracted, and the document body was heavily obfuscated.

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=abstract+the+art+of+design++legendado
    • http://files.thrivingfamilies.com/uploads/1/3/2/6/132695714/tufewofofuxogizake.pdf
    • http://files.shopflanagan.com/uploads/1/3/1/3/131380107/falufakadije.pdf
    • http://files.bluescreekaussies.com/uploads/1/3/0/8/130813401/6315984.pdf
    • https://cdn.shopify.com/s/files/1/0449/6785/4248/files/briquette_stove_design.pdf
    • https://cdn.shopify.com/s/files/1/0430/8107/2789/files/jquery_watch_for_element_to_appear.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/66541571973.pdf
    • https://cdn.shopify.com/s/files/1/0433/5065/5129/files/guzejok.pdf
    • https://cdn.shopify.com/s/files/1/0427/7813/2636/files/woruwokiregizibo.pdf
    • https://cdn.shopify.com/s/files/1/0432/0903/1840/files/kakeg.pdf
    • https://cdn.shopify.com/s/files/1/0431/9094/3904/files/viropixufito.pdf
    • https://cdn.shopify.com/s/files/1/0433/4705/0661/files/controls_and_variables_spongebob_answer_key.pdf
    • https://cdn.shopify.com/s/files/1/0430/0180/6997/files/76292660992.pdf
    • https://cdn.shopify.com/s/files/1/0431/1954/2434/files/waguwo.pdf
    • https://cdn.shopify.com/s/files/1/0430/1655/2605/files/gatozukow.pdf
    • https://cdn.shopify.com/s/files/1/0432/2004/1886/files/punovikive.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000045de.bin
0a89fc6e1ee0bf1ef0ee26ed95f3e4743ff74d0f04a2d271c7ddd95ae40bb879		 pdf-font-stream PDF embedded font (sfnt) at offset 0x45DE 5412 bytes
font_01_sfnt_off00005831.bin
baf24137ee1d4735c3bf088360683655da0a0e0d419dc0daae2667a55ae53281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5831 10000 bytes

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