Malicious PDF — malware analysis report

Static analysis result for SHA-256 b051b96ca150ab61…

MALICIOUS

PDF

46.1 KB Created: 2020-07-31 18:17:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5fef844dc88bd5cb5b4b08fd45005470 SHA-1: 87c6ac2035c19ca1bcf6253e2d4f1eb643b068fb SHA-256: b051b96ca150ab61a6146f1628d49637a5f270c94252ad0c36ec89076854ca2d
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external resources. One critical heuristic firing indicates a malicious redirector link to 'https://ttraff.ru/pify?keyword=lip+service+cast', suggesting an attempt to direct users to malicious content. Another critical heuristic identifies a PDF link farm, with numerous links hosted on cdn.shopify.com, indicating a potential SEO poisoning or link distribution tactic. The document body contains garbled text but also includes the malicious URL and several other Shopify-hosted PDF links.

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=lip+service+cast
    • http://files.fussfreefunerals.com/uploads/1/3/0/9/130969368/xotukifigiw-dawofipopiwora-runogifuvepeson-xurilepoxifimej.pdf
    • http://files.nursesdirectllc.com/uploads/1/3/0/8/130814132/2227864.pdf
    • http://files.mypomskies.com/uploads/1/3/1/3/131398109/7860770.pdf
    • https://cdn.shopify.com/s/files/1/0435/4804/9572/files/39334590920.pdf
    • https://cdn.shopify.com/s/files/1/0431/7675/5349/files/jurimajirobezanuv.pdf
    • https://cdn.shopify.com/s/files/1/0433/2149/1621/files/35389797906.pdf
    • https://cdn.shopify.com/s/files/1/0438/1917/2000/files/funizifegus.pdf
    • https://cdn.shopify.com/s/files/1/0434/0380/4839/files/figonodogogebajixituno.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/davunaxejapezuxipuwuwozom.pdf
    • https://cdn.shopify.com/s/files/1/0431/8475/0743/files/68309405404.pdf
    • https://cdn.shopify.com/s/files/1/0431/1734/6965/files/30726046925.pdf
    • https://cdn.shopify.com/s/files/1/0432/3321/4621/files/37696833790.pdf
    • https://cdn.shopify.com/s/files/1/0436/2053/2386/files/6573205359.pdf
    • https://cdn.shopify.com/s/files/1/0430/2723/4969/files/lovomibebotejurok.pdf
    • https://cdn.shopify.com/s/files/1/0431/1921/4756/files/nixezeba.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_off00006c40.bin
ed0e7b679cff89179a06926b30093ce6094cdd51987149945bca76cc2dcf4d58
pdf-font-stream PDF embedded font (sfnt) at offset 0x6C40 4468 bytes
font_01_sfnt_off00007b7c.bin
c5b1158017ad929ab4afe6bcbb5006c223a19123d4c2db050e9d562dbd38a5bf
pdf-font-stream PDF embedded font (sfnt) at offset 0x7B7C 9880 bytes
font_02_sfnt_off00009d4a.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361
pdf-font-stream PDF embedded font (sfnt) at offset 0x9D4A 4324 bytes