Malicious PDF — malware analysis report

Static analysis result for SHA-256 a03c40e2f78131c5…

MALICIOUS

PDF

48.0 KB Created: 2020-08-02 09:20:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5f0a1dd6dae359d80f4edbb781255013 SHA-1: 38d7f6884568d3762efb666692b8c15cf9fb3f4c SHA-256: a03c40e2f78131c5e2e1c550c94dd141d85b6f07e744d6e387832aa2377c447b
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, identified as a link farm. One of the primary links points to a known malicious redirector, ttraff.ru. The document body is heavily obfuscated and contains some of the URLs, suggesting an attempt to disguise the malicious nature of the content. No scripts were extracted from this sample.

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=felicia+gump+vanilla
    • http://files.hjdewaard.com/uploads/1/3/0/7/130740625/pitilunefe.pdf
    • http://files.futsal415.com/uploads/1/3/1/0/131070309/21285.pdf
    • http://files.reinehauspoodles.com/uploads/1/3/1/3/131398221/zefumijawixafikodux.pdf
    • http://files.adventurousschoolcounselor.com/uploads/1/3/1/8/131871501/riregaf-kafadevunik.pdf
    • http://files.thesterlingstyle.com/uploads/1/3/2/7/132712614/6296944.pdf
    • https://cdn.shopify.com/s/files/1/0434/2585/7703/files/nba_2k13_cheats_ps3.pdf
    • https://cdn.shopify.com/s/files/1/0430/8392/3609/files/11027092917.pdf
    • https://cdn.shopify.com/s/files/1/0427/9461/4940/files/ubuntu_server_wifi.pdf
    • https://cdn.shopify.com/s/files/1/0431/6309/1110/files/32077676050.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/46905239833.pdf
    • https://cdn.shopify.com/s/files/1/0433/5095/0041/files/90996431021.pdf
    • https://cdn.shopify.com/s/files/1/0431/6341/8784/files/74724875403.pdf
    • https://cdn.shopify.com/s/files/1/0432/8043/3302/files/tevuf.pdf
    • https://cdn.shopify.com/s/files/1/0437/5419/3047/files/xakofit.pdf
    • https://cdn.shopify.com/s/files/1/0434/1465/1038/files/24925747769.pdf
    • https://cdn.shopify.com/s/files/1/0433/7372/3800/files/36578729661.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_off00006904.bin
dfc91e34ec952260b8529a9dbb656a879ea413001853301928c6fbf08ac7d852		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6904 4992 bytes
font_01_sfnt_off00007a03.bin
f68a30f7547c01684db117b2184402402dfef478aff630b1bc923a3ee7c9219d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A03 10412 bytes
font_02_sfnt_off00009d21.bin
531e37f64a2e7dc3bfb257675d9e6c644c7b1597f33ba9a969cd005a7ed65660		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9D21 16312 bytes

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