Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b398b19f905e745…

MALICIOUS

PDF

45.4 KB Created: 2020-08-16 11:13:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 42dc36644ee3d9850413bdceb973a4e3 SHA-1: ddaa289c5e41345f77be7c171c73091e4da1a86d SHA-256: 9b398b19f905e7452e93e9d3a940453bd0bdeefa4eadddac90767bddc60f5d40
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=crazy+frog+dance+free', which is flagged as malicious. This suggests the document is designed to trick users into visiting malicious infrastructure, likely for phishing or malware delivery.

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.ru/pify?keyword=crazy+frog+dance+free
    • http://sopeliki.lakelandchoralsociety.org/uploads/1/3/1/4/131406436/gulovozed.pdf
    • https://cdn.shopify.com/s/files/1/0432/3134/6856/files/71325696151.pdf
    • https://cdn.shopify.com/s/files/1/0433/2594/8072/files/99232713394.pdf
    • https://cdn.shopify.com/s/files/1/0431/4349/5842/files/trilogia_bella_y_bestia.pdf
    • https://cdn.shopify.com/s/files/1/0429/2670/2758/files/biosensors_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/8280/8472/files/brio_tuscan_grille_menu.pdf
    • https://cdn.shopify.com/s/files/1/0431/3006/0955/files/joxanefexezeputerepuna.pdf
    • https://cdn.shopify.com/s/files/1/0431/0253/5840/files/48714134752.pdf
    • https://cdn.shopify.com/s/files/1/0431/7757/4562/files/pulawirosokapilet.pdf
    • https://cdn.shopify.com/s/files/1/0437/6009/1287/files/92414401119.pdf
    • https://cdn.shopify.com/s/files/1/0432/3006/8898/files/gomevebaga.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_off00007298.bin
cfb505964a821e5fd8e2beaadb4a127ee2c3ff4d48ab842ab5d48f50f78474ae		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7298 5036 bytes
font_01_sfnt_off000083db.bin
7858fdd1a220d7253d3f82532034394d4f1532cf914c304cd60076b94a0cbec8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x83DB 11132 bytes

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