Malicious PDF — malware analysis report

Static analysis result for SHA-256 f87af28614e2b3ec…

MALICIOUS

PDF

45.0 KB Created: 2020-08-13 16:51:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: dfca33e9bf2527050a85ac2c66810197 SHA-1: f235a865117f71f5a7ab8d60641c7223f2fbb142 SHA-256: f87af28614e2b3ecc4413422e32de03fe4108cec7a5db62f1fa429d48deadfe6
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.001 Malicious Link

The PDF contains a link farm and a specific malicious redirector URL, suggesting a phishing or scam campaign. The document body, though heavily obfuscated, contains the text "Biozone year 11 pdf" and the malicious URL, reinforcing the lure. The presence of numerous external PDF links points to a link farm strategy to obscure the ultimate destination.

Heuristics 4

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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=biozone+year+11+pdf
    • http://files.majordj247.com/uploads/1/3/2/7/132712185/wojare-mawidez.pdf
    • http://files.mindfulprofits.com/uploads/1/3/1/4/131452804/rakapesokakute_zunuzufulusime_levogeb.pdf
    • http://files.nathanielpicardbusky.com/uploads/1/3/0/8/130814043/jozize.pdf
    • http://files.strikesforkidsseattle.com/uploads/1/3/1/0/131070849/sizapobuwep.pdf
    • http://files.southernpridedesign.com/uploads/1/3/2/6/132681415/1539950.pdf
    • https://cdn.shopify.com/s/files/1/0430/8611/9079/files/punijepivolimogupelita.pdf
    • https://cdn.shopify.com/s/files/1/0431/1895/2612/files/91783511437.pdf
    • https://cdn.shopify.com/s/files/1/0432/3514/7933/files/fisiopatologia_de_la_cetosis_bovina.pdf
    • https://cdn.shopify.com/s/files/1/0441/0382/7608/files/29893274659.pdf
    • https://cdn.shopify.com/s/files/1/0435/7311/7086/files/aroma_gelato_and_waffle_lounge_menu.pdf
    • https://cdn.shopify.com/s/files/1/0427/7505/2454/files/25993493669.pdf
    • https://cdn.shopify.com/s/files/1/0435/8311/1323/files/61809586650.pdf
    • https://cdn.shopify.com/s/files/1/0429/8512/8099/files/dijatebivo.pdf
    • https://cdn.shopify.com/s/files/1/0435/1596/9688/files/89275908117.pdf
    • https://cdn.shopify.com/s/files/1/0432/3858/8584/files/map_of_europe_after_ww1.pdf
    • https://cdn.shopify.com/s/files/1/0439/5266/8830/files/9963359900.pdf
    • https://cdn.shopify.com/s/files/1/0428/3373/9932/files/togafivamaguritawamileguv.pdf
    • https://cdn.shopify.com/s/files/1/0440/0149/3142/files/algebra_1_exponents_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nimapudusakodinufuzexive.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_off00006f20.bin
ebca9084079679af3e01cf928f434fc2015babf17670a957f5cfbfaa8534b2d8
pdf-font-stream PDF embedded font (sfnt) at offset 0x6F20 5080 bytes
font_01_sfnt_off00008088.bin
f160ed799c6e85c7b0f83bb696626e95a75a17806f1c2700cbefad67906cd332
pdf-font-stream PDF embedded font (sfnt) at offset 0x8088 11308 bytes