Malicious PDF — malware analysis report

Static analysis result for SHA-256 99208b0708976239…

MALICIOUS

PDF

56.8 KB Created: 2020-08-21 04:40:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4fe9113f1eb2bb7c9d44ec2e10d5b6ab SHA-1: 145bc85bb1ebca6c8e31113a8ce7e93f1f05398f SHA-256: 99208b0708976239886f422d7c46b2ae3c4493e614345a68cf217e7393ccc6f8
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one heuristic identifying it as a malicious redirector and another as a link farm. The primary malicious URL identified is https://ttraff.com/pify?keyword=angular+formcontrol+date+validator, which likely serves as a gateway to further malicious content. The document body itself is largely unreadable binary data, but the presence of numerous links, including those pointing to external PDFs on domains like cdn.shopify.com, indicates a probable attempt to manipulate search engine results or distribute malware through a link farm strategy.

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=angular+formcontrol+date+validator
    • http://files.monsieurcoulibaly.com/uploads/1/3/0/7/130775171/napuxudexig.pdf
    • http://files.environmentalspillcontrolllc.com/uploads/1/3/1/6/131606697/vowilev.pdf
    • http://files.navanarts.com/uploads/1/3/2/7/132740339/wexuwuxutitojiv-mubuzigadiv-wovipikufugutud-rapibobeg.pdf
    • http://fasizome.bestcheaptrips.net/uploads/1/3/0/8/130874523/joxegigi.pdf
    • https://cdn.shopify.com/s/files/1/0428/6382/0959/files/57102350077.pdf
    • https://cdn.shopify.com/s/files/1/0430/0737/7567/files/69321800148.pdf
    • https://cdn.shopify.com/s/files/1/0437/0133/8266/files/cahier_de_dolances.pdf
    • https://cdn.shopify.com/s/files/1/0439/4260/9051/files/73522354780.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wemulaw.pdf
    • https://cdn.shopify.com/s/files/1/0431/7321/6411/files/bozefavopejeson.pdf
    • https://cdn.shopify.com/s/files/1/0431/7990/1096/files/bash_check_if_variable_is_empty.pdf
    • https://cdn.shopify.com/s/files/1/0433/2060/6885/files/12671236688.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_off00009467.bin
4d4c522a1b3eb512620e8660afc2a27b1eac0993c66ca9d5e02e605c3f56d86a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9467 5212 bytes
font_01_sfnt_off0000a60c.bin
a399893e17975e6a5c276f106c42afaa4ade666e0eeeb5b7c65c5a7fca412faf		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA60C 15496 bytes

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