Malicious PDF — malware analysis report

Static analysis result for SHA-256 81245c951477c995…

MALICIOUS

PDF

46.5 KB Created: 2020-07-30 20:58:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 52758b700c2c18b1aaf7628ab1b644a1 SHA-1: 6ed2fb233fff0c79e2e6cc2ee8e4b2eed60f8987 SHA-256: 81245c951477c995e593872147894cd228537c0ee271e2eaa1b3d3ec5f2de37e
120 Risk Score

Malware Insights

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

The PDF file contains numerous links, including one pointing to a known malicious redirector at 'ttraff.com'. The document body, though heavily obfuscated, suggests a lure related to an 'instrument technician resume'. The presence of a link farm and a malicious redirector indicates an attempt to lead the user to a malicious site, likely for phishing or malware delivery. No scripts were extracted from this sample.

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=instrument+technician+resume+pdf
    • http://files.juliacrist.com/uploads/1/3/0/7/130776795/861a3e.pdf
    • http://files.statebirdtogo.com/uploads/1/3/2/7/132710687/a1b067.pdf
    • http://files.agnesdaynursery.org/uploads/1/3/1/3/131384113/jaxisuwerin_kudogud.pdf
    • http://files.lancebyreferral.com/uploads/1/3/0/8/130813979/tavomisokilekevutede.pdf
    • http://files.face2.ca/uploads/1/3/1/4/131437941/2765e32d.pdf
    • https://cdn.shopify.com/s/files/1/0435/2134/3647/files/lupozelefogevox.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/laxigitifudavizemitipa.pdf
    • https://cdn.shopify.com/s/files/1/0438/0462/3010/files/kagarifava.pdf
    • https://cdn.shopify.com/s/files/1/0431/8153/9489/files/wulomebimefixifutamuxu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0569/7438/files/44932580728.pdf
    • https://cdn.shopify.com/s/files/1/0435/0276/4184/files/diwimodesavuxivufug.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/47184882359.pdf
    • https://cdn.shopify.com/s/files/1/0434/8946/0376/files/55593726854.pdf
    • https://cdn.shopify.com/s/files/1/0428/8780/7129/files/59574010887.pdf
    • https://cdn.shopify.com/s/files/1/0434/8248/0806/files/44675868392.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_off00007883.bin
56214cbbadd4ccdabe35a3658a3e71a5767dbd1b06a7e7af77635fce1e4509e7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7883 5072 bytes
font_01_sfnt_off00008987.bin
a50e3dc9e68594cade9fe5e23f197ec144139b87a72195a3c9ec3eca93871482		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8987 10156 bytes

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