Malicious PDF — malware analysis report

Static analysis result for SHA-256 d13f411a9cb9cf2b…

MALICIOUS

PDF

59.8 KB Created: 2020-08-12 06:50:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3fcafe346a4b43a6f36f6b84885ff9c9 SHA-1: 5d299865f1f72e8f56575c0360a05a77d9595dde SHA-256: d13f411a9cb9cf2b664e039fdcab591c7e42b0ad808d7ace38e034cae5c359c0
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a heuristic firing for a malicious redirector link, specifically `https://ttraff.cc/pify?keyword=nso+marriage+certificate+form+pdf`, which is presented in the document body. This indicates a phishing or malware delivery attempt. The file also contains a large number of embedded links, many pointing to Shopify domains, suggesting a link farm used for SEO poisoning or distributing malicious content. No scripts were extracted from this sample.

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=nso+marriage+certificate+form+pdf
    • http://lufim.neukappadelta.com/uploads/1/3/0/8/130874284/7905048.pdf
    • http://zeton.trinitysecurityallies.com/uploads/1/3/1/1/131164239/c2f020a25.pdf
    • http://mafakesaj.yellowlanternproductions.com/uploads/1/3/1/3/131381489/c4c1a2b56974.pdf
    • http://sezusoj.littlefeetdaycarecarmelny.com/uploads/1/3/0/7/130739415/5578117.pdf
    • https://cdn.shopify.com/s/files/1/0431/5352/2850/files/64400695427.pdf
    • https://cdn.shopify.com/s/files/1/0430/8759/3632/files/lizekelafewota.pdf
    • https://cdn.shopify.com/s/files/1/0430/4951/7205/files/gopogufefapuzuverez.pdf
    • https://cdn.shopify.com/s/files/1/0433/0081/5006/files/present_tense_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0436/4235/5865/files/23094107123.pdf
    • https://cdn.shopify.com/s/files/1/0437/5465/1799/files/40067060333.pdf
    • https://cdn.shopify.com/s/files/1/0431/8694/6212/files/sixodidifojovemopobe.pdf
    • https://cdn.shopify.com/s/files/1/0433/0897/4235/files/11252611095.pdf
    • https://cdn.shopify.com/s/files/1/0434/0298/5621/files/daritazigefodowofira.pdf
    • https://cdn.shopify.com/s/files/1/0440/7810/4728/files/66286334765.pdf
    • https://cdn.shopify.com/s/files/1/0439/4919/5419/files/passive_simple_past_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0436/5497/1557/files/23172180667.pdf
    • https://cdn.shopify.com/s/files/1/0435/8026/0511/files/mathematics_grade_12_textbook.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_off0000ac03.bin
f27ccae60f6f2a59f2e2db64a253b292a85d9e7c4b99670d654ee4c826a58062		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAC03 5412 bytes
font_01_sfnt_off0000be54.bin
4bd989d8bc739eb830d805e65ca71c04f462ab9bb96b7dceadc025562dc1a77c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBE54 10376 bytes

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