Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a286cd78fd97e3f…

MALICIOUS

PDF

40.1 KB Created: 2020-08-30 15:29:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9db28056ad2d7883d03cca5c5a5dd454 SHA-1: 64350b1a02ee154fe665dcf7478cde11adeb3818 SHA-256: 2a286cd78fd97e3f617826f39565ceec326deb8b8e1741cd80d217b9b531ba4c
150 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/wix?keyword=star+wars+title+crawl+generator'. This link is presented within the document body, suggesting a social engineering lure. The file also exhibits characteristics of a link farm, with numerous embedded URLs, many pointing to shopify.com, likely for SEO manipulation or to host further malicious content. The ML classifier strongly indicates maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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/wix?keyword=star+wars+title+crawl+generator
    • https://cdn.shopify.com/s/files/1/0463/3113/4113/files/53066878885.pdf
    • https://cdn.shopify.com/s/files/1/0437/4921/2309/files/calculus_early_transcendentals_solutions_manual.pdf
    • https://cdn.shopify.com/s/files/1/0434/0360/8231/files/38408089026.pdf
    • https://cdn.shopify.com/s/files/1/0430/8733/1481/files/10th_class_2020_date_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/46552055365.pdf
    • https://cdn.shopify.com/s/files/1/0432/7574/7483/files/bakerowodifobuxagedorasi.pdf
    • https://cdn.shopify.com/s/files/1/0431/4873/8720/files/dezonukunuwuselajusufin.pdf
    • https://cdn.shopify.com/s/files/1/0431/4379/0760/files/virajonur.pdf
    • https://static.usrfiles.com/ugd/b8c837_06bda1539ada4c8e9e2b7c7eff23da76.pdf
    • https://static.usrfiles.com/ugd/b8c837_5fc6c97f93bc4691a976cd63338b8b70.pdf
    • https://static.usrfiles.com/ugd/20d83a_2e09364648524685a7c2416c284406ba.pdf
    • https://static.usrfiles.com/ugd/b8c837_ff10f24e6597413396d47af256bffd89.pdf
    • https://cdn.shopify.com/s/files/1/0431/3926/8765/files/lepepuvevogebifobipoloxi.pdf
    • https://cdn.shopify.com/s/files/1/0460/6518/9019/files/22206161327.pdf
    • https://cdn.shopify.com/s/files/1/0434/4591/1709/files/xewero.pdf
    • https://cdn.shopify.com/s/files/1/0437/1621/4939/files/34753117033.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_off000049f7.bin
a719f879fc307716b95306b39e820955cc17753ee77556e72426ee937fe7ab43
pdf-font-stream PDF embedded font (sfnt) at offset 0x49F7 5160 bytes
font_01_sfnt_off00005b98.bin
a1e5ba46a76c84856803e60051a508d38114c9142fc3983e8f05a03fe5a59f47
pdf-font-stream PDF embedded font (sfnt) at offset 0x5B98 10232 bytes
font_02_sfnt_off00007eb6.bin
aed46c9af23f208f135cb03afacfd1ac790ba89857c5134c11dc43e7260cc7d5
pdf-font-stream PDF embedded font (sfnt) at offset 0x7EB6 16108 bytes