Malicious PDF — malware analysis report

Static analysis result for SHA-256 b361198d8467b605…

MALICIOUS

PDF

39.5 KB Created: 2020-08-21 01:09:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4ca60710ede698dca99cd9d4a634be70 SHA-1: 8d49445c3c8090fc5d053d9e0876ec30d8037282 SHA-256: b361198d8467b605d6d2c3d49ca7a0fdf0b60dead208ec460001cdefc06ae8c8
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.com/pify?keyword=nccn+guidelines+mantle+cell+lymphoma'. This indicates an attempt to trick users into visiting a malicious site, likely for phishing or malware distribution. The document also exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on Shopify. The presence of these links and the redirector strongly suggests a social engineering attack aimed at directing users to harmful 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=nccn+guidelines+mantle+cell+lymphoma
    • http://gapabu.avhscoreacademy.com/uploads/1/3/1/0/131070450/wutix.pdf
    • https://cdn.shopify.com/s/files/1/0434/6013/3030/files/38044112872.pdf
    • https://cdn.shopify.com/s/files/1/0433/7614/8638/files/kexakiwikopojetovanil.pdf
    • https://cdn.shopify.com/s/files/1/0435/3504/0664/files/segedawedazapobuxolaxoz.pdf
    • https://cdn.shopify.com/s/files/1/0438/0547/4978/files/49586421730.pdf
    • https://cdn.shopify.com/s/files/1/0430/8946/1410/files/takedinuvejipususukagugit.pdf
    • https://cdn.shopify.com/s/files/1/0437/6254/8887/files/41959027900.pdf
    • https://cdn.shopify.com/s/files/1/0430/7392/9378/files/finatabiwinigel.pdf
    • https://cdn.shopify.com/s/files/1/0432/5248/2208/files/broccoli_enter_the_gungeon.pdf
    • https://cdn.shopify.com/s/files/1/0431/2032/8864/files/93422481849.pdf
    • https://cdn.shopify.com/s/files/1/0427/7361/0663/files/nevatomusujuxexugaduxid.pdf
    • https://cdn.shopify.com/s/files/1/0447/8582/7991/files/caroube_proprits.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_off00005c7f.bin
541eb14bc4bef28add9c5a399764d1b522befb572646c79880ea18a8a01cc802		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C7F 5464 bytes
font_01_sfnt_off00006ef1.bin
cc61c16218fca7dc2a25e079940ba43a2c9eb818101ce6cdbfbcf8c19ef015b6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6EF1 10164 bytes

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