Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f674f0289873c1d…

MALICIOUS

PDF

57.5 KB Created: 2020-08-02 05:59:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9fcf181540b5f09fd1f3be13d853de10 SHA-1: 407bdfa75a5f9ad429da19ba9bcd4cf2944a91ab SHA-256: 3f674f0289873c1d74db1d61378924e6135b5142fd6f0f8970b2376ab76e440f
150 Risk Score

Malware Insights

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

The PDF file contains a link farm of numerous PDF documents, many hosted on Shopify, designed to appear as legitimate content. One of the primary links, 'https://ttraff.ru/pify?keyword=glu+games+hack', is identified as a malicious redirector. This suggests the document's purpose is to drive traffic to malicious infrastructure, likely for phishing or malware distribution, by exploiting search engine optimization techniques for PDF content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=glu+games+hack
    • http://files.vocesintimaeartsong.com/uploads/1/3/2/6/132681826/cd8e15f31cea0.pdf
    • http://files.sacredgroundcollective.org/uploads/1/3/1/8/131871786/3211236.pdf
    • http://files.antvervoort.com/uploads/1/3/0/7/130775231/xugeku-ludigozawoguju-ribezadeso-tivax.pdf
    • http://files.timayanaturals.org/uploads/1/3/1/3/131380842/lusepitamowol.pdf
    • https://cdn.shopify.com/s/files/1/0429/8909/3018/files/sowikafevozu.pdf
    • https://cdn.shopify.com/s/files/1/0432/4071/8496/files/nosowetufeluxam.pdf
    • https://cdn.shopify.com/s/files/1/0427/4136/6951/files/clicker_keypad_programming.pdf
    • https://cdn.shopify.com/s/files/1/0427/7954/1671/files/41135859918.pdf
    • https://cdn.shopify.com/s/files/1/0437/2434/1400/files/wigirovagav.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/32732230761.pdf
    • https://cdn.shopify.com/s/files/1/0429/4960/7590/files/41601017361.pdf
    • https://cdn.shopify.com/s/files/1/0431/8671/6830/files/10866536493.pdf
    • https://cdn.shopify.com/s/files/1/0430/6275/5490/files/kopetavamavitatemakufuguw.pdf
    • https://cdn.shopify.com/s/files/1/0432/2256/5032/files/19521161598.pdf
    • https://cdn.shopify.com/s/files/1/0433/6192/7318/files/40731185574.pdf
    • https://cdn.shopify.com/s/files/1/0433/0881/0398/files/44156881415.pdf
    • https://cdn.shopify.com/s/files/1/0430/0803/2922/files/34321316008.pdf
    • https://cdn.shopify.com/s/files/1/0433/5144/1562/files/ruwaxiza.pdf
    • https://cdn.shopify.com/s/files/1/0434/5351/3894/files/94916706644.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_off0000a0c2.bin
3bef9f838a64a0c1738e8ee7a220a1cc0d2ef1fbdb6929979234cf0b1f027c7a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA0C2 5212 bytes
font_01_sfnt_off0000b265.bin
a01b06f2d541f1ac02dc7dfeaac17f36931c82384f0a87ab751ace73c5c2a8c7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB265 11780 bytes

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