Malicious PDF — malware analysis report

Static analysis result for SHA-256 c74280bdf00c8a5d…

MALICIOUS

PDF

36.5 KB Created: 2020-08-16 17:44:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4d9553067b5a5cc4b1f5703fd41646f2 SHA-1: 69810f95f3d0316534daae8e0c2764de3cf2edd5 SHA-256: c74280bdf00c8a5dce9645d552d4e838051ab42c7fb15379617300ea2d805d43
120 Risk Score

Malware Insights

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

The PDF document contains a link farm designed to appear as a legitimate download for an 'Adobe PDF converter'. The primary malicious link, https://ttraff.ru/pify?keyword=adobe+pdf+converter++apk, redirects to potentially harmful content. The document's structure and embedded links strongly suggest a social engineering tactic to trick users into downloading malware.

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=adobe+pdf+converter++apk
    • http://files.hasaonline.com/uploads/1/3/1/4/131453124/netegute.pdf
    • http://files.anamnostoshouse.com/uploads/1/3/1/0/131071145/tavak.pdf
    • https://cdn.shopify.com/s/files/1/0437/7670/4664/files/53001203103.pdf
    • https://cdn.shopify.com/s/files/1/0433/7192/1571/files/sengoku_basara_ppsspp_android.pdf
    • https://cdn.shopify.com/s/files/1/0434/8762/5369/files/allen_carr_lose_weight_now_free.pdf
    • https://cdn.shopify.com/s/files/1/0437/5461/9041/files/delududilubupet.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/11411440246.pdf
    • https://cdn.shopify.com/s/files/1/0431/7331/4715/files/vetusokisexaxe.pdf
    • https://cdn.shopify.com/s/files/1/0432/3626/2050/files/kixowebesoxurijopurigone.pdf
    • https://cdn.shopify.com/s/files/1/0433/2729/1544/files/jivukisovixuxefitapoki.pdf
    • https://cdn.shopify.com/s/files/1/0430/1442/2687/files/getomebopenuda.pdf
    • https://cdn.shopify.com/s/files/1/0430/6924/3549/files/zumunenalokerilese.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_off00004f12.bin
e158ee685b581b2bc57026add7bda2c4773dab9aebf585b09a51d3b5494b3f84		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4F12 5192 bytes
font_01_sfnt_off000060cb.bin
93b87cb95641e8572bc8c25b0da01f06fc5698cbca38d60bd1c47df05a1aef8d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60CB 10824 bytes

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