Malicious PDF — malware analysis report

Static analysis result for SHA-256 b55394173f6dfe69…

MALICIOUS

PDF

44.8 KB Created: 2020-08-22 17:10:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 42e02a6266150931a828973ee24188fa SHA-1: ef6fea1443f0b37ae09a360480205aa756561d4e SHA-256: b55394173f6dfe6927c9f99c97e9a0e6b138709c25fe305fd7d16b919ea23ed1
128 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link pointing to ttraff.com, which is known for malicious activity. It also features a large number of embedded links, many of which point to Shopify domains, likely as part of an SEO link farm to obscure the malicious intent. The document body contains a call-to-action phrase, suggesting a lure to trick the user into clicking the malicious link.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=portal+2+aperture+tag+free
    • http://files.manyanabeachpad.com/uploads/1/3/1/4/131437041/fakuwem.pdf
    • http://torazom.friendshipfiles.com/uploads/1/3/0/8/130874588/tujesidedupo_nobewo.pdf
    • http://files.ipmed.org/uploads/1/3/1/8/131856945/geputuz.pdf
    • http://files.mybasketball.ca/uploads/1/3/2/8/132815359/bb828c795e1.pdf
    • http://sakozulu.jowensmithmusic.com/uploads/1/3/1/3/131379477/kubavika.pdf
    • https://cdn.shopify.com/s/files/1/0461/9114/9214/files/sullivan_algebra_and_trigonometry_9th_edition_answers.pdf
    • https://cdn.shopify.com/s/files/1/0437/6284/3797/files/anterior_cruciate_ligament_anatomy.pdf
    • https://cdn.shopify.com/s/files/1/0430/9182/0695/files/63897560383.pdf
    • https://cdn.shopify.com/s/files/1/0428/0962/2695/files/vomowotizu.pdf
    • https://cdn.shopify.com/s/files/1/0463/0672/1957/files/41460324462.pdf
    • https://cdn.shopify.com/s/files/1/0428/7509/3159/files/pdf_to_excel_converter_for_free.pdf
    • https://cdn.shopify.com/s/files/1/0430/0098/7811/files/applied_econometrics_with_r_kleiber.pdf
    • https://cdn.shopify.com/s/files/1/0431/7318/3643/files/42953425952.pdf
    • https://cdn.shopify.com/s/files/1/0432/5320/3102/files/rutodukuzopefugazemo.pdf
    • https://cdn.shopify.com/s/files/1/0430/0485/4426/files/melamukigara.pdf
    • https://cdn.shopify.com/s/files/1/0434/6970/1280/files/dififelowezato.pdf
    • https://cdn.shopify.com/s/files/1/0433/9548/1750/files/xawobukevowuwo.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_off00007096.bin
ae7f786c12b178378fd6c66c7a5eb7842ebbced846821f0818f1b6d086d611bc
pdf-font-stream PDF embedded font (sfnt) at offset 0x7096 5024 bytes
font_01_sfnt_off000081bd.bin
f2cf78fedbeb82d5106df2d4ee60a5d87d2316b66a731a2ef856bc507d2689cd
pdf-font-stream PDF embedded font (sfnt) at offset 0x81BD 10652 bytes