Malicious PDF — malware analysis report

Static analysis result for SHA-256 38569a6a68c3f256…

MALICIOUS

PDF

35.7 KB Created: 2020-08-08 14:40:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 44722a4fef6882f8b95e5ef543141034 SHA-1: 8f1d151b1b6c98bec3d800e2858db3e9e72874c4 SHA-256: 38569a6a68c3f256cf5b1ea6d84e13e8de9387bac003e55c5035e858adb9147e
120 Risk Score

Malware Insights

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

The PDF contains a link farm, with one prominent link pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=livreto+acgih+pdf' which is flagged as malicious. This suggests the document's primary purpose is to redirect users to malicious sites, likely for further exploitation or phishing.

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=livreto+acgih+pdf
    • http://ririv.datboop.com/uploads/1/3/2/7/132710780/fuvakuj.pdf
    • http://files.wfyouth.org/uploads/1/3/1/0/131070866/fcc58.pdf
    • http://siwotoluz.kentactingstudio.co.uk/uploads/1/3/0/8/130873995/lujupivadafud.pdf
    • https://cdn.shopify.com/s/files/1/0441/3099/2280/files/kibogojalafuwibexip.pdf
    • https://cdn.shopify.com/s/files/1/0432/7122/5502/files/tesifojifimoxapogawaxanu.pdf
    • https://cdn.shopify.com/s/files/1/0434/5764/2648/files/54766263122.pdf
    • https://cdn.shopify.com/s/files/1/0433/1582/2747/files/nutufigotaxofedamitoga.pdf
    • https://cdn.shopify.com/s/files/1/0428/3577/1558/files/d_d_cityscape.pdf
    • https://cdn.shopify.com/s/files/1/0432/0926/1217/files/72695106967.pdf
    • https://cdn.shopify.com/s/files/1/0434/7504/2457/files/dipez.pdf
    • https://cdn.shopify.com/s/files/1/0432/3108/4701/files/ravasexobixeraduxovuju.pdf
    • https://cdn.shopify.com/s/files/1/0432/9524/4452/files/78936415574.pdf
    • https://cdn.shopify.com/s/files/1/0428/1345/6550/files/bisolikomatekubule.pdf
    • https://cdn.shopify.com/s/files/1/0434/4738/6264/files/15122429791.pdf
    • https://cdn.shopify.com/s/files/1/0430/8375/9765/files/wenalufusadozobanev.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_off00004d09.bin
2a9d020f60f6f1f6530e3bbe5f9b6221fb309d7c25e47600658aabf8614f8198		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4D09 5208 bytes
font_01_sfnt_off00005ec7.bin
3d6fcb3719c83f2a9f94df41bab66f6f49bee13dca01a8841496dbe20e3d0bbf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5EC7 10328 bytes

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