Malicious PDF — malware analysis report

Static analysis result for SHA-256 47675354f1846cfc…

MALICIOUS

PDF

42.1 KB Created: 2020-08-19 06:10:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8d6f2a9bb7ed10f8536b62d66917b2df SHA-1: c8a485503c7c6734985d4cab49cfc56c930174f1 SHA-256: 47675354f1846cfcfc14ee1b81f7ed20d3813c5bd9b2f7b2749cd8e3a82e2d0d
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'ttraff.com'. The document body also contains this URL, disguised as a link to 'basic electrical engineering quiz questions with answers'. The file also exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on Shopify. The primary malicious IOC is the ttraff.com redirector, which likely leads to further 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.com/pify?keyword=basic+electrical+engineering+quiz+questions+with+answers
    • http://rudan.pacificplaycompany.com/uploads/1/3/1/3/131381078/jepof_sodexag_bonizorele_biwesi.pdf
    • http://fadevap.parkyoga-utrecht.nl/uploads/1/3/1/1/131163599/nejenaj.pdf
    • http://files.travelswithatoddler.com/uploads/1/3/1/0/131070124/domaloduvodojog.pdf
    • https://cdn.shopify.com/s/files/1/0431/2439/2087/files/notuda.pdf
    • https://cdn.shopify.com/s/files/1/0432/2990/5058/files/smoker_recipes.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/rijakilijupefiwopoxafeza.pdf
    • https://cdn.shopify.com/s/files/1/0433/1434/8197/files/68588108257.pdf
    • https://cdn.shopify.com/s/files/1/0431/6574/5309/files/53845506710.pdf
    • https://cdn.shopify.com/s/files/1/0431/5804/4827/files/41701409526.pdf
    • https://cdn.shopify.com/s/files/1/0448/0778/2557/files/spatial_ability_test_questions.pdf
    • https://cdn.shopify.com/s/files/1/0429/7441/2949/files/lixizudekenemavulogi.pdf
    • https://cdn.shopify.com/s/files/1/0447/9585/4997/files/flower_identification_app.pdf
    • https://cdn.shopify.com/s/files/1/0430/9811/2167/files/77754524123.pdf
    • https://cdn.shopify.com/s/files/1/0437/8243/9063/files/the_man_comes_around_lyrics.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_off0000660f.bin
f912745d62bac7ff09a54cb2b7b38958ed600fa0ff16302f63d1aa704909eadf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x660F 5380 bytes
font_01_sfnt_off0000785d.bin
52dec2260814203100d6ea807c416f747860a3219ae4a492e7d2d754c1308652		 pdf-font-stream PDF embedded font (sfnt) at offset 0x785D 10192 bytes

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