Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ff17f720bd8bea9…

MALICIOUS

PDF

50.5 KB Created: 2020-08-16 17:38:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 636a4aa2195b1662c60f9f86df64c943 SHA-1: 77ecd0f2ba720e574242f878b910c3afac818dfc SHA-256: 4ff17f720bd8bea95d978180ac116d69223cf86b3920e71c364d4a9279b8dbec
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, nineteen of which are generated SEO links pointing to various PDF files hosted on Shopify. One of the primary links directs to a known malicious redirector, ttraff.com, which is likely used to obscure the final malicious destination. The document body contains garbled text but includes the URL that triggered the malicious redirector heuristic.

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.com/pify?keyword=aiag+ppap+manual+3rd+edition
    • http://kepakero.kupetspinkinvitational.com/uploads/1/3/0/7/130740597/657a456.pdf
    • http://jebimoki.gosynthetic.ca/uploads/1/3/1/4/131453134/febusoni_guvebo_tudoxamo.pdf
    • http://soporasaw.meacorsigns.com/uploads/1/3/2/8/132814930/1f40d90b.pdf
    • http://files.pedicureastridpeperkamp.nl/uploads/1/3/1/3/131383434/2067338.pdf
    • https://cdn.shopify.com/s/files/1/0435/3448/3605/files/hipertensi_menyebabkan_aterosklerosis.pdf
    • https://cdn.shopify.com/s/files/1/0428/1679/8883/files/stroke_physiotherapy_assessment_form.pdf
    • https://cdn.shopify.com/s/files/1/0436/4474/7929/files/33347296412.pdf
    • https://cdn.shopify.com/s/files/1/0428/8918/3398/files/39160651649.pdf
    • https://cdn.shopify.com/s/files/1/0432/7673/0533/files/vesimop.pdf
    • https://cdn.shopify.com/s/files/1/0431/0161/8327/files/17666933268.pdf
    • https://cdn.shopify.com/s/files/1/0427/9477/8791/files/tebiduwiwomazugu.pdf
    • https://cdn.shopify.com/s/files/1/0440/1777/8838/files/gojonizelavoteja.pdf
    • https://cdn.shopify.com/s/files/1/0429/3486/1991/files/75168894267.pdf
    • https://cdn.shopify.com/s/files/1/0434/0459/1271/files/54488429376.pdf
    • https://cdn.shopify.com/s/files/1/0431/4903/3627/files/norubop.pdf
    • https://cdn.shopify.com/s/files/1/0428/3393/6547/files/jojiferuvoniledud.pdf
    • https://cdn.shopify.com/s/files/1/0439/1672/2344/files/baldur_s_gate_official_strategy_guide.pdf
    • https://cdn.shopify.com/s/files/1/0439/4418/1928/files/rofovumugijemi.pdf
    • https://cdn.shopify.com/s/files/1/0433/2358/8773/files/hitron_cgn3_manual.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/
    • https://cdn.shopify.com/s/files/1/0439/4418/1928/files/rofovumugijem

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006e7d.bin
466743e661afcca841a4de4560ddfdba3a0f89c12147d4d1d6a49db364288042		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E7D 3140 bytes
font_01_sfnt_off000079ad.bin
0f4a15ab878cbef2fcf3f8af96d0857f9fe5b4638ffb7edc0e08d1e3f37e929e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x79AD 5136 bytes
font_02_sfnt_off00008afe.bin
a112ded3495ad23b134cbd4ce1905112655f358866fe721d2d3c2d9dedfe608a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8AFE 10360 bytes
font_03_sfnt_off0000ae60.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAE60 4324 bytes

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