Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0ffc2d7429f89d2…

MALICIOUS

PDF

34.4 KB Created: 2020-08-17 13:37:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c264c9a463388097d85db69a8652cbd4 SHA-1: 3b85b9ce2d1a4dc8a1e8d297b700c10afdcb806f SHA-256: b0ffc2d7429f89d23480e727c7f5176c5b4684b00d40bef040c701e31230fbe1
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of these links, 'https://ttraff.ru/pify?keyword=spelling+games+apk', is identified as a malicious redirector. The document body also contains this URL, suggesting the primary intent is to lure the user to click this malicious link, likely leading to further compromise.

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.ru/pify?keyword=spelling+games+apk
    • http://bapuwilo.thesavvywineshopper.com/uploads/1/3/0/7/130738765/446d2c870d.pdf
    • http://noxuboged.coppermoonsculpture.com/uploads/1/3/1/8/131858685/vawaxaxupivewas_lapedav_rarile_mavixewiw.pdf
    • http://files.joshuahettwer.com/uploads/1/3/1/0/131071298/xikekapunak_vezedako.pdf
    • http://tikubuj.rosanaourens.com/uploads/1/3/1/0/131070420/muvanirewemu_mukirirorek.pdf
    • http://bukebonok.radbren.com/uploads/1/3/1/3/131379655/38bac79d.pdf
    • https://cdn.shopify.com/s/files/1/0434/9932/3558/files/xatusokulo.pdf
    • https://cdn.shopify.com/s/files/1/0435/4804/9572/files/sociological_perspective_of_self.pdf
    • https://cdn.shopify.com/s/files/1/0439/7613/0718/files/freeport_tx_tide_report.pdf
    • https://cdn.shopify.com/s/files/1/0433/7595/2030/files/genetically_modified_food_examples.pdf
    • https://cdn.shopify.com/s/files/1/0431/7646/0447/files/boxugeron.pdf
    • https://cdn.shopify.com/s/files/1/0432/8914/9608/files/zagepemedatapoderotefi.pdf
    • https://cdn.shopify.com/s/files/1/0434/7409/2198/files/xajikenefeveluv.pdf
    • https://cdn.shopify.com/s/files/1/0428/1548/8163/files/amputation_physical_therapy.pdf
    • https://cdn.shopify.com/s/files/1/0430/9005/1221/files/35382638442.pdf
    • https://cdn.shopify.com/s/files/1/0430/3159/3113/files/60253290034.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_off00004a73.bin
68185f06d4d098e971ce7d3840a8d3144099aa535b328d6013cfb5d17ddf7366		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4A73 5208 bytes
font_01_sfnt_off00005c20.bin
cbe088fba437a8d9b1776ecd04628ad4f153d0afb69477682074d239220fe217		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C20 9628 bytes

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