Malicious PDF — malware analysis report

Static analysis result for SHA-256 2107afecd0f05bf2…

MALICIOUS

PDF

45.3 KB Created: 2020-08-22 08:18:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7cf400503607b5a1c6047f0fed22d86d SHA-1: da9f51e82c5d77da3c96feef7bdff6dd81299e2f SHA-256: 2107afecd0f05bf2ab8e949f19fc28e34907c4d18361b1dcde5fccab8b421ec7
120 Risk Score

Malware Insights

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

The PDF file contains a mass of external links, many of which point to benign Shopify domains, but one critical link directs to a known malicious redirector at 'ttraff.ru'. This suggests the document is designed to lure users into clicking malicious links, likely for phishing or malware distribution. The document body text, though partially corrupted, includes the target URL and keywords that might be used for SEO poisoning to attract victims.

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=measurement+conversion+worksheets+grade+5+pdf
    • http://wewazupa.crossfitkanga.com/uploads/1/3/2/6/132682883/14c4a2.pdf
    • http://files.renattaazzam.com/uploads/1/3/1/4/131437792/tadinugi.pdf
    • http://vejar.knightsfielddental.com/uploads/1/3/0/8/130813694/0827a01b91.pdf
    • http://nixomumu.cvma49deuce.net/uploads/1/3/0/8/130874359/1fbee942e2.pdf
    • http://wuraxobe.jamesgriffithsfilmmusic.com/uploads/1/3/2/8/132814930/1768659.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/49839171509.pdf
    • https://cdn.shopify.com/s/files/1/0434/4987/6630/files/origami_butterfly_ball_instructions.pdf
    • https://cdn.shopify.com/s/files/1/0429/4973/8650/files/87167572757.pdf
    • https://cdn.shopify.com/s/files/1/0432/6575/3241/files/mathematics_trigonometry_formula_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/1047/3633/files/26032466598.pdf
    • https://cdn.shopify.com/s/files/1/0428/2109/1484/files/tanajisifumeraxijika.pdf
    • https://cdn.shopify.com/s/files/1/0434/0927/7095/files/50569829703.pdf
    • https://cdn.shopify.com/s/files/1/0432/2207/3506/files/alexandre_o_grande_biografia.pdf
    • https://cdn.shopify.com/s/files/1/0431/1888/7068/files/5457450961.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_off00006348.bin
bef0963c2863d23c98c6c73002b5c0b0d92f1b05f56b8d310a84d5ccc94a91aa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6348 5764 bytes
font_01_sfnt_off000076d3.bin
702d6a2a1e032e9083dad395dab4c6c6de1b15b70fdc2767351fd9b85b40b2ca		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76D3 10204 bytes
font_02_sfnt_off000099d6.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x99D6 4324 bytes

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