Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e892c1edc2d573f…

MALICIOUS

PDF

47.0 KB Created: 2020-08-21 09:41:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7d977c481b9a5cd9a9893e13e83e2ab9 SHA-1: 52a86495448827ed415f98cdcb44b343c0968de3 SHA-256: 3e892c1edc2d573fd554dbebbc9d9ffd33f3f3f270f19303c51b4fe6f653ffe8
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many pointing to what appears to be a link farm designed for SEO manipulation. One prominent link, 'https://ttraff.com/pify?keyword=microsoft+authenticator+minimum+android+version', is flagged as a malicious redirector. The document body, though heavily obfuscated, contains this URL and other PDF links, suggesting a lure to a malicious site. The PDF structure and link farm indicate a likely phishing or malware distribution attempt.

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.com/pify?keyword=microsoft+authenticator+minimum+android+version
    • http://vosabol.michaelyadvish.com/uploads/1/3/2/6/132680903/parazup.pdf
    • http://rarawire.angellameanix.co/uploads/1/3/1/3/131398101/wilarugezineduka.pdf
    • http://buxazi.espaipoetic.com/uploads/1/3/0/7/130738731/bodolawokid_wipigeniva_xejorixesuki.pdf
    • https://cdn.shopify.com/s/files/1/0437/5393/0901/files/39329138214.pdf
    • https://cdn.shopify.com/s/files/1/0432/3062/5950/files/wavezu.pdf
    • https://cdn.shopify.com/s/files/1/0433/8489/7701/files/94552189578.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/magej.pdf
    • https://cdn.shopify.com/s/files/1/0434/3929/2577/files/xiluzemosa.pdf
    • https://cdn.shopify.com/s/files/1/0433/0536/9768/files/84477639195.pdf
    • https://cdn.shopify.com/s/files/1/0428/5533/4055/files/47667313817.pdf
    • https://cdn.shopify.com/s/files/1/0428/4655/2227/files/18650430856.pdf
    • https://cdn.shopify.com/s/files/1/0433/7090/5750/files/89325847867.pdf
    • https://cdn.shopify.com/s/files/1/0432/8275/9836/files/fugexaxuvumutipokoligaz.pdf
    • https://cdn.shopify.com/s/files/1/0427/7128/4135/files/1210010772.pdf
    • https://cdn.shopify.com/s/files/1/0432/8289/0912/files/anton_calculus_8th_edition_solutions.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_off00007a54.bin
567e2123d7e2f3b805dab053313463ba5ada868c19c8ee0b68ee54dfd3fe7c12		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A54 5292 bytes
font_01_sfnt_off00008c30.bin
b07d05b169deed0d628638a04d01aaa8c12e797e4c9081fed789f902fe40decd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8C30 10128 bytes

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