Malicious PDF — malware analysis report

Static analysis result for SHA-256 efd4097d90e40fc7…

MALICIOUS

PDF

57.5 KB Created: 2020-08-15 01:29:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 77f6e8bbaef501de4db71540fafe44f7 SHA-1: 2deee2e6c3280d73d396f855aa62f553bf30ae19 SHA-256: efd4097d90e40fc76bf6e6f8921b0295d78d3f63a15b81d8b3e3f15ea80cead5
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one specifically identified as a malicious redirector. This redirector, 'https://ttraff.com/pify?keyword=batman+assault+on+arkham+2014', is likely used to obscure the final destination and potentially deliver a malicious payload or lead to a phishing page. The presence of a large number of external PDF links, many hosted on cdn.shopify.com, suggests a link farm or SEO poisoning tactic to improve search engine visibility for malicious content.

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=batman+assault+on+arkham+2014
    • http://favep.militarywivessurvivalguide.com/uploads/1/3/1/3/131383664/1805f.pdf
    • https://cdn.shopify.com/s/files/1/0432/4062/0200/files/rewaw.pdf
    • https://cdn.shopify.com/s/files/1/0428/2207/4534/files/funimenefisij.pdf
    • https://cdn.shopify.com/s/files/1/0433/2149/1621/files/kimufeduruxalonixizom.pdf
    • https://cdn.shopify.com/s/files/1/0431/3550/0439/files/jigiwum.pdf
    • https://cdn.shopify.com/s/files/1/0430/1524/1891/files/74580479360.pdf
    • https://cdn.shopify.com/s/files/1/0430/9119/8112/files/lojevejos.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/86372263330.pdf
    • https://cdn.shopify.com/s/files/1/0432/6935/7728/files/keneviwimafutu.pdf
    • https://cdn.shopify.com/s/files/1/0430/2084/5210/files/league_of_legends_morgana_build.pdf
    • https://cdn.shopify.com/s/files/1/0432/4697/7179/files/10098075253.pdf
    • https://cdn.shopify.com/s/files/1/0431/7682/0890/files/wuboz.pdf
    • https://cdn.shopify.com/s/files/1/0432/6277/1366/files/11724223918.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off0000bc27.bin
1ed9079cc5f131934f3a273f3bd2dfb75e74ed9047aa2c00878038ad358e1f1e		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0xBC27 18492 bytes
font_00_sfnt_off00008423.bin
6c900c1782460ff81428e79d09c147be7c4b9c6c38bc4c82ff924ee2a7538529		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8423 5452 bytes
font_01_sfnt_off00009684.bin
ad25f416ade949b7d4e3472cb29459f49ce1d19a234335b37fd7509b51ee429e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9684 11032 bytes

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