Malicious PDF — malware analysis report

Static analysis result for SHA-256 39ce397f02b2ca26…

MALICIOUS

PDF

52.6 KB Created: 2020-08-09 05:09:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6e02b79f450ad29ce2e30ca414d23815 SHA-1: 8e749c04561dd8d4dd503449092e2d0bedf39e1b SHA-256: 39ce397f02b2ca26dedd0e0570fa8c2b289b587f523af76fa0aa2412707ab9eb
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a heuristic firing for a malicious redirector link, pointing to `https://ttraff.cc/pify?keyword=oxford+dictionary+of+foreign+words+and+phrases+pdf`. This indicates the document's primary purpose is to redirect the user to malicious infrastructure. The document body, though heavily obfuscated, contains references to the dictionary lure and the malicious URL. The presence of a large number of external PDF links also suggests a link farm or SEO poisoning tactic to distribute the malicious PDF.

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.cc/pify?keyword=oxford+dictionary+of+foreign+words+and+phrases+pdf
    • http://wujamev.bodtkergolftour.com/uploads/1/3/1/3/131383651/0f793757b52b1d.pdf
    • http://lozuzitu.westcapitalrealty.com/uploads/1/3/0/9/130969060/b7657a8.pdf
    • http://files.finneganswakeupwithcandle.com/uploads/1/3/0/8/130874205/pekivo.pdf
    • http://files.moesplace.us/uploads/1/3/0/7/130738875/zutizak-wikuriku.pdf
    • https://cdn.shopify.com/s/files/1/0431/2930/7293/files/gedunubixozix.pdf
    • https://cdn.shopify.com/s/files/1/0432/6536/0034/files/diablo_2_lord_of_destruction_cd_key.pdf
    • https://cdn.shopify.com/s/files/1/0431/5525/9560/files/57805569342.pdf
    • https://cdn.shopify.com/s/files/1/0431/3035/5866/files/mewojarero.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/siwizobudavegi.pdf
    • https://cdn.shopify.com/s/files/1/0430/0845/8905/files/54209361024.pdf
    • https://cdn.shopify.com/s/files/1/0433/9902/0696/files/13568747827.pdf
    • https://cdn.shopify.com/s/files/1/0430/7006/2754/files/zopemulizawuzugojivixizox.pdf
    • https://cdn.shopify.com/s/files/1/0431/0928/6050/files/fugemexowejoruwinavipoxu.pdf
    • https://cdn.shopify.com/s/files/1/0428/8937/9993/files/ranavop.pdf
    • https://cdn.shopify.com/s/files/1/0432/2567/7982/files/36210806482.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_off00007646.bin
d4cc3ffa7b1ef55e31f9d2adbd0c0cb87e6d2d2a98eb7ffe6ec6055151c313ae
pdf-font-stream PDF embedded font (sfnt) at offset 0x7646 5676 bytes
font_01_sfnt_off000089b7.bin
7343df8b196a61481e37d13906e8421704f42ea0212c8dd4551efa94720591ca
pdf-font-stream PDF embedded font (sfnt) at offset 0x89B7 10648 bytes
font_02_sfnt_off0000ae41.bin
c64f975c7c74378765a15e192890ba001b575443647995d4109c17b56814fb1e
pdf-font-stream PDF embedded font (sfnt) at offset 0xAE41 16544 bytes