Malicious PDF — malware analysis report

Static analysis result for SHA-256 f305b9370c8463ad…

MALICIOUS

PDF

46.6 KB Created: 2020-08-05 03:00:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 59fd7b420a48cb266a117cc6d37fad83 SHA-1: 980c3ed7f5de4eed90cc66c104adcb715bc4991b SHA-256: f305b9370c8463adf60fc22a6f6abd86623e20854615ba514bd3ce9622b9f181
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to `https://ttraff.cc/pify?keyword=ms+excel+tutorial+2020+pdf+free+download`. The document body, though heavily obfuscated, contains this same URL, suggesting it's the primary lure. The file also exhibits characteristics of a link farm, with numerous external PDF links, including one hosted on `cdn.shopify.com`. The overall pattern suggests a phishing or scam attempt disguised as a tutorial download.

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.cc/pify?keyword=ms+excel+tutorial+2020+pdf+free+download
    • http://files.mariealohalanibrown.com/uploads/1/3/1/4/131411539/sidomeme-fazenopap-nizafelu-tutufojevi.pdf
    • http://files.snowypeaksoap.com/uploads/1/3/2/3/132302973/a7512c13cdce8e.pdf
    • http://files.startxbenefits.com/uploads/1/3/1/4/131406449/ee3c3461e8.pdf
    • http://files.westendjiujitsu.com/uploads/1/3/0/7/130740112/sixowupozikusujid.pdf
    • https://cdn.shopify.com/s/files/1/0433/7745/9363/files/37414926287.pdf
    • https://cdn.shopify.com/s/files/1/0431/5290/0260/files/pekoxavaremujarekek.pdf
    • https://cdn.shopify.com/s/files/1/0434/6744/0294/files/environmental_economics_and_management_callan.pdf
    • https://cdn.shopify.com/s/files/1/0430/5502/2234/files/dironugidulewegorasejet.pdf
    • https://cdn.shopify.com/s/files/1/0431/3694/2234/files/introduction_to_genetic_analysis_9th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0430/4535/5674/files/dofimimazoza.pdf
    • https://cdn.shopify.com/s/files/1/0438/3988/1373/files/xaxozekozivewefolirazivef.pdf
    • https://cdn.shopify.com/s/files/1/0430/6858/8194/files/wipidamatevigawata.pdf
    • https://cdn.shopify.com/s/files/1/0432/5706/9721/files/38835480468.pdf
    • https://cdn.shopify.com/s/files/1/0431/8652/0224/files/55376021209.pdf
    • https://cdn.shopify.com/s/files/1/0432/3459/0888/files/23727785815.pdf
    • https://cdn.shopify.com/s/files/1/0429/2775/1321/files/50702162647.pdf
    • https://cdn.shopify.com/s/files/1/0428/2299/2028/files/mugatovosiruniruzizosof.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_off00007889.bin
1860d49fa8d6c3bf7f6bd070dbfc5449c9fe9387e64489498f6a5256d97359db
pdf-font-stream PDF embedded font (sfnt) at offset 0x7889 5588 bytes
font_01_sfnt_off00008bbd.bin
6caf6c7f7920237bf8b47bbbe7c218ad547c370c5606956e497df58b9f20d721
pdf-font-stream PDF embedded font (sfnt) at offset 0x8BBD 9744 bytes