Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e062105d3f60e06…

MALICIOUS

PDF

43.7 KB Created: 2020-08-09 10:07:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 723888c1a2ba3c4a2bbf0f80ede1193c SHA-1: 70da8892741e4adbbdcd1d19695dd251969719cc SHA-256: 3e062105d3f60e06fe6837bd8b03d189a9c73797918eefdf0bab5c4fb3c79c90
120 Risk Score

Malware Insights

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

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.com/pify?keyword=airport+vocabulary+english+exercises+pdf, is identified as a malicious redirector. The document body, though heavily obfuscated, contains this same URL, suggesting the primary intent is to lure the user into clicking the malicious link.

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=airport+vocabulary+english+exercises+pdf
    • http://files.coastalhomeinspectionsla.com/uploads/1/3/1/3/131381363/pojotofibelisat-repuraref-nisonagufiveku.pdf
    • http://files.spaceliftinteriordesign.com/uploads/1/3/1/4/131453944/wasiwiz-lefeloromisu.pdf
    • http://files.raewynwallacetherapies.com/uploads/1/3/0/7/130775607/loxikitanek.pdf
    • http://files.creativecounselingsrq.org/uploads/1/3/2/7/132710787/5366484.pdf
    • https://cdn.shopify.com/s/files/1/0435/7554/1919/files/elemental_impurities_risk_assessment_report.pdf
    • https://cdn.shopify.com/s/files/1/0434/1134/1479/files/jidaz.pdf
    • https://cdn.shopify.com/s/files/1/0434/7772/9442/files/92206896705.pdf
    • https://cdn.shopify.com/s/files/1/0431/0935/1575/files/88030520903.pdf
    • https://cdn.shopify.com/s/files/1/0432/6172/2788/files/58208684287.pdf
    • https://cdn.shopify.com/s/files/1/0429/8693/0329/files/44303481191.pdf
    • https://cdn.shopify.com/s/files/1/0432/5765/9547/files/54755821210.pdf
    • https://cdn.shopify.com/s/files/1/0434/7238/8249/files/59999798535.pdf
    • https://cdn.shopify.com/s/files/1/0430/2218/8701/files/stihl_fs_250.pdf
    • https://cdn.shopify.com/s/files/1/0433/7165/9414/files/19815590122.pdf
    • https://cdn.shopify.com/s/files/1/0431/5440/7578/files/myjdfaccount._com_pay_bill.pdf
    • https://cdn.shopify.com/s/files/1/0427/6004/4710/files/63132737372.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005c3c.bin
f2e25d5a8143c175f3fc5be8e19b70ef3b06f14e368f35f70803b45a37e72004
pdf-font-stream PDF embedded font (sfnt) at offset 0x5C3C 5656 bytes
font_01_sfnt_off00006f6f.bin
19277506073b9f0789529c548a7964407947da1ea64b20c097427c7109540595
pdf-font-stream PDF embedded font (sfnt) at offset 0x6F6F 10584 bytes
font_02_sfnt_off0000937d.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f
pdf-font-stream PDF embedded font (sfnt) at offset 0x937D 4324 bytes