Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb622eb73a5390c9…

MALICIOUS

PDF

51.4 KB Created: 2020-08-17 02:59:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0f0ea8cd8997c5b701bc16aaaddd12a9 SHA-1: 683496954810378e20619142d663b4539329936b SHA-256: eb622eb73a5390c968992ce0af309fc6e62fcf15886ae286516d82692e43f6b1
148 Risk Score

Malware Insights

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

The PDF file contains a mass external link farm, with many links pointing to Shopify domains, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'Nsw fair trading renting guide' and the URL 'https://ttraff.ru/pify?keyword=nsw+fair+trading+renting+guide', suggesting a lure to a phishing or malware distribution site. The presence of a link farm and a malicious redirector indicates a likely phishing or credential harvesting attempt.

Heuristics 5

  • 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
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=nsw+fair+trading+renting+guide
    • http://gakikif.edenplacefarms.org/uploads/1/3/1/4/131406687/firij-zubuke-xunok.pdf
    • http://nenumu.kaixuanengrg.com/uploads/1/3/2/7/132741334/lewevo-dutojojogona-jinofiniru-nimomevox.pdf
    • http://lalus.a-custom-esl-tutoring.com/uploads/1/3/1/4/131406665/vomedu.pdf
    • https://cdn.shopify.com/s/files/1/0433/8640/5029/files/xedaba.pdf
    • https://cdn.shopify.com/s/files/1/0432/9403/2025/files/banoriwupateri.pdf
    • https://cdn.shopify.com/s/files/1/0433/9456/4252/files/51224428532.pdf
    • https://cdn.shopify.com/s/files/1/0450/4610/4222/files/oxford_discover_2nd_edition.pdf
    • https://cdn.shopify.com/s/files/1/0440/2629/8533/files/work_sampling_online.pdf
    • https://cdn.shopify.com/s/files/1/0431/1282/4993/files/powomobepenop.pdf
    • https://cdn.shopify.com/s/files/1/0433/0032/3478/files/woxibisiza.pdf
    • https://cdn.shopify.com/s/files/1/0433/0238/7867/files/11687430473.pdf
    • https://cdn.shopify.com/s/files/1/0432/1535/6067/files/62546548845.pdf
    • https://cdn.shopify.com/s/files/1/0434/7405/9426/files/smallville_season_1.pdf
    • https://cdn.shopify.com/s/files/1/0450/1009/2182/files/mercury_50_hp_outboard_repair_manual.pdf
    • https://cdn.shopify.com/s/files/1/0429/3902/3526/files/30521865495.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_off00008c8c.bin
8cb780ea5299b23cb890a20f9cbdf716e8d56a5b033f04cc36d458970e57a6a6
pdf-font-stream PDF embedded font (sfnt) at offset 0x8C8C 5104 bytes
font_01_sfnt_off00009e03.bin
69198b215b515191f0988e2143d45c20b7e4ea3ccaab114e1b0d9bbee7ca661a
pdf-font-stream PDF embedded font (sfnt) at offset 0x9E03 10168 bytes