Malicious PDF — malware analysis report

Static analysis result for SHA-256 4bcbf7dc4367ffd7…

MALICIOUS

PDF

35.4 KB Created: 2020-08-07 05:18:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 50057935bce9199aae8764f2389641a7 SHA-1: 52a26876b4668515612fef5f8baeabb480a40f31 SHA-256: 4bcbf7dc4367ffd74c53b47899f23129653e63fd0d90658a0fd65bf964cb8858
120 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one critical heuristic identifying it as a malicious redirector. The primary malicious URL, 'https://ttraff.ru/pify?keyword=statistical+analysis+quick+reference+guidebook+with+spss+examples+pdf', is designed to lure users by appearing to offer a statistical analysis guidebook. This link is likely intended to redirect users to a malicious site for further exploitation or credential harvesting.

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=statistical+analysis+quick+reference+guidebook+with+spss+examples+pdf
    • http://files.fiban.org/uploads/1/3/2/6/132695300/bezarigugudobewudo.pdf
    • http://files.superminiatures.net/uploads/1/3/1/3/131380288/jojuru_kabijazazazu.pdf
    • http://files.negsbestthing.com/uploads/1/3/2/8/132815961/riwemuto.pdf
    • https://cdn.shopify.com/s/files/1/0437/7713/0658/files/xedevej.pdf
    • https://cdn.shopify.com/s/files/1/0428/2790/7239/files/nivotaduraxalij.pdf
    • https://cdn.shopify.com/s/files/1/0433/7346/1669/files/xoxewunenigoma.pdf
    • https://cdn.shopify.com/s/files/1/0434/2431/7607/files/60515358964.pdf
    • https://cdn.shopify.com/s/files/1/0434/4751/7349/files/bearing_capacity_of_multi_layered_soil.pdf
    • https://cdn.shopify.com/s/files/1/0428/6991/5814/files/78469282949.pdf
    • https://cdn.shopify.com/s/files/1/0432/7594/4091/files/96896086175.pdf
    • https://cdn.shopify.com/s/files/1/0433/5009/8085/files/fazonujizov.pdf
    • https://cdn.shopify.com/s/files/1/0431/6626/9597/files/christianity_and_autosuggestion.pdf
    • https://cdn.shopify.com/s/files/1/0432/3459/0888/files/53655820956.pdf
    • https://cdn.shopify.com/s/files/1/0434/3595/0236/files/xiwerevovuzi.pdf
    • https://cdn.shopify.com/s/files/1/0431/2937/2836/files/mekegegapibulidepetiverok.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_off00004a2d.bin
d9aef9a55c9b83245ac17f80d518a3a2218197b9429750dbac581e9a1b9b7e33		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4A2D 6264 bytes
font_01_sfnt_off00005f62.bin
b848066c46cd97bf48c22c146b4e563d11ddcbc7c972d508563b374c98dd1d40		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F62 9588 bytes

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