Malicious PDF — malware analysis report

Static analysis result for SHA-256 92272847e413cdf0…

MALICIOUS

PDF

40.4 KB Created: 2020-08-04 00:28:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 877f29cdf3a861dcdd8f8468b2de94aa SHA-1: a92a98644215841a4c3c6d9b7dea0ce07b67c359 SHA-256: 92272847e413cdf0aab0de9e2facb55f69f47f96112d9f33fbb521508fd9ba10
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, a technique often used for SEO poisoning or to direct users to malicious sites. One critical heuristic firing indicates a direct link to a known malicious redirector at 'https://ttraff.ru/pify?keyword=best+pdf+reader+for+kali+linux'. The document body, though heavily obfuscated, also contains this URL, suggesting a lure to download a PDF reader or related content that ultimately leads to malicious infrastructure.

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=best+pdf+reader+for+kali+linux
    • http://files.psacollegecounseling.com/uploads/1/3/0/8/130874063/4844bd519b98.pdf
    • http://files.polarcenter-bg.com/uploads/1/3/0/9/130970004/c40b681752.pdf
    • http://files.keramaris.gr/uploads/1/3/0/7/130776822/lozipex_pidedit_retodagi_zedofi.pdf
    • http://zolam.readingchristiannetwork.com/uploads/1/3/0/7/130740178/3653d.pdf
    • https://cdn.shopify.com/s/files/1/0432/4248/7972/files/dometic_penguin_ii_installation_manual.pdf
    • https://cdn.shopify.com/s/files/1/0434/6888/2072/files/1117943140.pdf
    • https://cdn.shopify.com/s/files/1/0437/9289/2061/files/98207071567.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/87463685859.pdf
    • https://cdn.shopify.com/s/files/1/0433/3495/9256/files/66087782380.pdf
    • https://cdn.shopify.com/s/files/1/0435/1423/3000/files/59788795013.pdf
    • https://cdn.shopify.com/s/files/1/0431/7170/9092/files/zizasesape.pdf
    • https://cdn.shopify.com/s/files/1/0428/3321/5654/files/11217092280.pdf
    • https://cdn.shopify.com/s/files/1/0430/5338/3833/files/33338242872.pdf
    • https://cdn.shopify.com/s/files/1/0432/8413/6086/files/pidedifonixuvixob.pdf
    • https://cdn.shopify.com/s/files/1/0437/0500/8293/files/97106525479.pdf
    • https://cdn.shopify.com/s/files/1/0431/0512/4516/files/25593075172.pdf
    • https://cdn.shopify.com/s/files/1/0429/9997/1999/files/battletoads_snes_loveroms.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_off0000614e.bin
7e511a606cf12990fa9675f4496bc0e29cac50ac9990066afcdec84a3f52ba3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x614E 5216 bytes
font_01_sfnt_off00007322.bin
c5a92b2a601001dd950258a370b2dbb1cbca95577e396d87c6766b393bb4fad1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7322 9820 bytes

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