Malicious PDF — malware analysis report

Static analysis result for SHA-256 30316fe598f117ba…

MALICIOUS

PDF

53.9 KB Created: 2020-07-31 11:27:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4cf1ed270e3bf201350a23a87d9af1df SHA-1: b03de52c867e31887fa6368a3166cc169ee47e99 SHA-256: 30316fe598f117ba89648e998fdfa12150263c0f9c11033e94d815f84d7207ab
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.cc'. This indicates the document's primary purpose is to redirect users to malicious infrastructure. The document body, though heavily obfuscated, contains text related to academic content, likely serving as a lure. The PDF also contains a large number of external links, many hosted on Shopify, which is characteristic of a link farm used for SEO poisoning or to obscure the final malicious destination.

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=derivation+of+equations+of+motion+by+graphical+method+pdf
    • http://files.prospectamechurch.com/uploads/1/3/1/4/131437615/7505379.pdf
    • http://files.literarycounsel.com/uploads/1/3/1/6/131607131/pitofo-jadejegopir-pewuwusafad.pdf
    • http://files.brendanswallace.com/uploads/1/3/0/8/130873945/lofera.pdf
    • http://files.gamblingproblemhelp.com/uploads/1/3/1/4/131453615/9819880.pdf
    • https://cdn.shopify.com/s/files/1/0433/4708/3429/files/7411676432.pdf
    • https://cdn.shopify.com/s/files/1/0436/4769/7049/files/84896488822.pdf
    • https://cdn.shopify.com/s/files/1/0437/4193/7818/files/povozalaso.pdf
    • https://cdn.shopify.com/s/files/1/0436/4356/8278/files/76290152547.pdf
    • https://cdn.shopify.com/s/files/1/0435/2652/0986/files/niludelowovewaruki.pdf
    • https://cdn.shopify.com/s/files/1/0433/6202/5624/files/3426395403.pdf
    • https://cdn.shopify.com/s/files/1/0430/0265/8979/files/wixefapovivokuwavelot.pdf
    • https://cdn.shopify.com/s/files/1/0432/2564/5211/files/82926358032.pdf
    • https://cdn.shopify.com/s/files/1/0430/7327/4018/files/41875384893.pdf
    • https://cdn.shopify.com/s/files/1/0436/3006/7865/files/32621966231.pdf
    • https://cdn.shopify.com/s/files/1/0434/4135/6950/files/46234273723.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_off0000701b.bin
c74ec7ea41890a96656e1ea4f2e0c964cccdea4e62e366b76c8a7ec6c4a24080
pdf-font-stream PDF embedded font (sfnt) at offset 0x701B 5880 bytes
font_01_sfnt_off000083f9.bin
f4b61888273303a52a8aa0c27b806b4dfb6f3ac8d304587a77264af2885783d3
pdf-font-stream PDF embedded font (sfnt) at offset 0x83F9 15496 bytes
font_02_sfnt_off0000b457.bin
8493e157b12b101a67d72eeebb5ec6105fbaef992b69ec611cb22b769443a165
pdf-font-stream PDF embedded font (sfnt) at offset 0xB457 16212 bytes