Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f10be99c2d1c510…

MALICIOUS

PDF

42.1 KB Created: 2020-08-09 23:20:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0194085d45362ec8ad969000b01cbfaf SHA-1: 1f50e0fc2425249dc6d8ecbb7cd89fa9cf995578 SHA-256: 9f10be99c2d1c510f2ae2d9bfc59819f9ec006f5e78ed63f17762b5eed872aff
150 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The document body and embedded links suggest a lure for a 'free download' of a popular productivity method, which is a common social engineering tactic. The primary malicious IOC is the redirector URL, which is likely used to funnel victims to malicious sites or further stages of an attack. No scripts were extracted from this sample.

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.cc/pify?keyword=the+bullet+journal+method+pdf+free+download
    • http://files.todayhousing.com/uploads/1/3/0/8/130814085/8890769.pdf
    • http://files.fortlincoln.org/uploads/1/3/0/8/130874588/1e019.pdf
    • http://files.loveliesandthings.com/uploads/1/3/0/9/130969603/9155400.pdf
    • https://cdn.shopify.com/s/files/1/0433/4669/0203/files/51304720216.pdf
    • https://cdn.shopify.com/s/files/1/0432/9360/6046/files/nejegaboremiberuvalawa.pdf
    • https://cdn.shopify.com/s/files/1/0431/6246/8516/files/sewugubemaluzexula.pdf
    • https://cdn.shopify.com/s/files/1/0430/9070/6599/files/nsfas_application_form_2020_download_dut.pdf
    • https://cdn.shopify.com/s/files/1/0430/9850/5369/files/81430558657.pdf
    • https://cdn.shopify.com/s/files/1/0428/2492/5351/files/silent_hunter_5_mods.pdf
    • https://cdn.shopify.com/s/files/1/0437/2794/5889/files/prizerebel_points_hack.pdf
    • https://cdn.shopify.com/s/files/1/0432/8184/2332/files/47935885743.pdf
    • https://cdn.shopify.com/s/files/1/0432/7630/4544/files/airport_codes_in_world.pdf
    • https://cdn.shopify.com/s/files/1/0429/1470/9663/files/16575573111.pdf
    • https://cdn.shopify.com/s/files/1/0432/0854/0324/files/audit_report_meaning.pdf
    • https://cdn.shopify.com/s/files/1/0431/0004/5465/files/53322542674.pdf
    • https://cdn.shopify.com/s/files/1/0447/1436/0985/files/articulos_de_tanatologia_forense.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_off000055e1.bin
72fd8ffad7a04488a6dd98e5bf7d24d44d3091b02d7ddc04d20afaec9d642b39
pdf-font-stream PDF embedded font (sfnt) at offset 0x55E1 5192 bytes
font_01_sfnt_off0000676a.bin
29306cf72d6d0965f2771c574ee2b71784baaed9c3676d8f34f0173901e34454
pdf-font-stream PDF embedded font (sfnt) at offset 0x676A 10612 bytes
font_02_sfnt_off00008b7d.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176
pdf-font-stream PDF embedded font (sfnt) at offset 0x8B7D 4324 bytes