Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1ccfa8b464be231…

MALICIOUS

PDF

48.2 KB Created: 2020-08-23 13:39:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 62b1d1a3fd5806d5d8cabd08372fa9cc SHA-1: 467abcbc178d98a6c0f9fc5ff6f3277250ca05ba SHA-256: e1ccfa8b464be2316cb9eb67ab7127e20b582dbca5865025be6cff7c5c90b6e0
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'ttraff.ru'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, many hosted on Shopify. The document body, though heavily obfuscated, contains the same malicious URL and a benign-looking PDF filename, suggesting a lure to drive traffic to the malicious site.

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=ben+10+all+aliens+in+ultimate+form
    • http://dasomoso.squarelakeassociation.com/uploads/1/3/1/4/131406798/kefebovuligidavut.pdf
    • https://cdn.shopify.com/s/files/1/0446/0707/8564/files/pcsx2_running_too_fast.pdf
    • https://cdn.shopify.com/s/files/1/0434/6085/3920/files/hp_laserjet_p2015_driver.pdf
    • https://cdn.shopify.com/s/files/1/0433/0743/4142/files/pujakewiladow.pdf
    • https://cdn.shopify.com/s/files/1/0427/9848/1564/files/difudesazarumigu.pdf
    • https://cdn.shopify.com/s/files/1/0431/6240/2967/files/adobe_spark_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/57148414383.pdf
    • https://cdn.shopify.com/s/files/1/0430/6763/7917/files/lojutebizedebiz.pdf
    • https://cdn.shopify.com/s/files/1/0432/0398/5570/files/jojepisekiteb.pdf
    • https://cdn.shopify.com/s/files/1/0457/3688/6428/files/bengali_movie_ghatak_all_song.pdf
    • https://cdn.shopify.com/s/files/1/0428/5035/3318/files/47583489876.pdf
    • https://cdn.shopify.com/s/files/1/0428/9232/9119/files/99480745547.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_off00007395.bin
143832ecb5f56e371e221acc4352951a3e24e41207fff8b092ba8a89cf90bdba		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7395 5156 bytes
font_01_sfnt_off0000850f.bin
31a9233c552a367a49ceffb7e24271a5a2007ba4b89bb47bf119d52ceffbe36a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x850F 15212 bytes

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