Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ebc6028671f7a32…

MALICIOUS

PDF

40.2 KB Created: 2020-08-03 10:54:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7b7c722203469c57a7632bf1110b35f6 SHA-1: 7c2b1a1d8a09dfa9c5d836621f2be20ae71270f6 SHA-256: 8ebc6028671f7a32859f274c8220f41427c9261033df418c1f5157cc6e06b8a0
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many of which point to Shopify domains hosting other PDFs, suggesting a link farm for SEO poisoning. One prominent link, disguised as an update for 'Office 2007', redirects through `ttraff.cc`, a known malicious redirector. This indicates a phishing or malware distribution attempt using a lure related to software updates.

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=office+2007+updates
    • http://files.hillcountryyoungmarines.com/uploads/1/3/1/6/131606289/7865702.pdf
    • http://files.srmswildcatband.com/uploads/1/3/0/9/130969480/ramavumidumak-radixetu-godufo.pdf
    • http://files.millenialpages.com/uploads/1/3/0/8/130814680/f2ce6d1df36ec.pdf
    • https://cdn.shopify.com/s/files/1/0429/7634/6266/files/xowefabowenajufiwutu.pdf
    • https://cdn.shopify.com/s/files/1/0433/2906/1014/files/64083020891.pdf
    • https://cdn.shopify.com/s/files/1/0432/5651/2667/files/sevafiviturev.pdf
    • https://cdn.shopify.com/s/files/1/0427/9032/2342/files/gedomitiz.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pizejop.pdf
    • https://cdn.shopify.com/s/files/1/0430/4610/9341/files/sogakode.pdf
    • https://cdn.shopify.com/s/files/1/0433/7916/3285/files/70908819942.pdf
    • https://cdn.shopify.com/s/files/1/0430/7881/1810/files/boworivuta.pdf
    • https://cdn.shopify.com/s/files/1/0428/5703/7990/files/1354972725.pdf
    • https://cdn.shopify.com/s/files/1/0427/4916/5734/files/90946104527.pdf
    • https://cdn.shopify.com/s/files/1/0432/3885/0719/files/doviluxoduvugofula.pdf
    • https://cdn.shopify.com/s/files/1/0430/1671/6437/files/7743556301.pdf
    • https://cdn.shopify.com/s/files/1/0431/6823/5675/files/28524510467.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_off00005f81.bin
25e928c1e2c0eae5be52434ff57542992eb4a22f7ff354ad0907322b925e8b56		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F81 5400 bytes
font_01_sfnt_off00007205.bin
4c8848b403256e397fb6adae9fc48e032147276e6a397758ccc041ad81e811de		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7205 10060 bytes

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