Malicious PDF — malware analysis report

Static analysis result for SHA-256 2852e26eafe804ad…

MALICIOUS

PDF

50.9 KB Created: 2020-08-29 16:45:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b5be8e2e0791e66a60dd26b4c0335384 SHA-1: 0b78693f6a9e9196440e66d6166c128d7e74bcf6 SHA-256: 2852e26eafe804adc462c5fa844ca279b710fdc97439e3861cc72df8ae631479
128 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com, and one critical link points to a known malicious redirector at ttraff.cc. The document body, though heavily obfuscated, contains the URL that is also present in the heuristics and the IOCs. This suggests a phishing or redirection attack where the user is tricked into clicking a link under the guise of accessing a user manual.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=soundpeats+q12+user+manual+pdf
    • https://static.usrfiles.com/ugd/b5472a_a8405ac2f09d4106abc21afc39d4fb28.pdf
    • https://static.usrfiles.com/ugd/1f2646_e439b250c5f64ce28500bf68826e9ada.pdf
    • https://static.usrfiles.com/ugd/576447_f33da298f92046869120535963c1e3c0.pdf
    • https://cdn.shopify.com/s/files/1/0437/7313/2961/files/xewavufozawawit.pdf
    • https://cdn.shopify.com/s/files/1/0437/7663/9127/files/template_catering_business_plan.pdf
    • https://cdn.shopify.com/s/files/1/0428/8158/1209/files/gipamuwokudanixofapufipo.pdf
    • https://cdn.shopify.com/s/files/1/0431/1734/6965/files/20029673237.pdf
    • https://cdn.shopify.com/s/files/1/0434/8621/6352/files/64324118458.pdf
    • https://cdn.shopify.com/s/files/1/0428/1673/3340/files/4114337039.pdf
    • https://cdn.shopify.com/s/files/1/0431/2186/8960/files/tejaxa.pdf
    • https://cdn.shopify.com/s/files/1/0432/8118/6971/files/measurement_instrumentation_lab_manual.pdf
    • https://cdn.shopify.com/s/files/1/0440/4156/8421/files/3433416368.pdf
    • https://cdn.shopify.com/s/files/1/0433/9020/6117/files/quadratische_gleichungen_bungen.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_off000078fb.bin
99f0c38b5277153601826871c46eb8a1a4d6295e71f29e874734943fa5eff81f
pdf-font-stream PDF embedded font (sfnt) at offset 0x78FB 5432 bytes
font_01_sfnt_off00008b53.bin
bed2a932e7ebaa78391f245960dc3580c18fb070e59b7773dd18953fb00b2eb1
pdf-font-stream PDF embedded font (sfnt) at offset 0x8B53 10924 bytes
font_02_sfnt_off0000b073.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176
pdf-font-stream PDF embedded font (sfnt) at offset 0xB073 4324 bytes