Malicious PDF — malware analysis report

Static analysis result for SHA-256 37311f319888026f…

MALICIOUS

PDF

46.3 KB Created: 2020-08-02 19:51:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 723011f2c628029ba1cf1905cb01c862 SHA-1: deb628e8aff87190357fa5b5d27c590167e23843 SHA-256: 37311f319888026f72d50fe1046baf7977d97bc9b974080bfbe89a4a160b0952
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.com/pify?keyword=auto+repair+labor+guide'. The document body, though heavily obfuscated, contains text related to 'Auto repair labor guide' and the malicious URL, suggesting a lure. The file also exhibits characteristics of a link farm, with numerous embedded URLs, many of which are hosted on Shopify. The primary malicious URL is the most critical IOC.

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=auto+repair+labor+guide
    • http://files.theclassicequestrianllc.com/uploads/1/3/1/4/131437733/lawalipituwi.pdf
    • http://files.middlesexmotorcycle.com/uploads/1/3/0/7/130738993/669168.pdf
    • http://files.haileybrunson.com/uploads/1/3/0/8/130813639/8454555.pdf
    • http://files.traceylichnerphd.com/uploads/1/3/0/8/130813511/zuxademup_gubudobixagelo.pdf
    • https://cdn.shopify.com/s/files/1/0428/8859/3567/files/sulijubefonom.pdf
    • https://cdn.shopify.com/s/files/1/0431/5119/6315/files/88531240550.pdf
    • https://cdn.shopify.com/s/files/1/0435/8782/9928/files/40425844846.pdf
    • https://cdn.shopify.com/s/files/1/0435/5158/8507/files/46827932515.pdf
    • https://cdn.shopify.com/s/files/1/0431/0020/9319/files/42512811085.pdf
    • https://cdn.shopify.com/s/files/1/0431/2439/2087/files/986516160.pdf
    • https://cdn.shopify.com/s/files/1/0429/3351/8489/files/buwubafebafasizeduvurix.pdf
    • https://cdn.shopify.com/s/files/1/0439/0017/4504/files/dizuvike.pdf
    • https://cdn.shopify.com/s/files/1/0432/2734/9159/files/gakefewopodekudusukiregi.pdf
    • https://cdn.shopify.com/s/files/1/0431/2878/3002/files/47199090314.pdf
    • https://cdn.shopify.com/s/files/1/0430/4915/6757/files/89924667528.pdf
    • https://cdn.shopify.com/s/files/1/0433/4383/9385/files/lamuwegagumaw.pdf
    • https://cdn.shopify.com/s/files/1/0431/7731/2405/files/24891144790.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
font_00_sfnt_off00006adb.bin
23a0352e5f9452dac51ed48a5c70ea263ee0302fd6f04bd6cafdf43e07716e73
pdf-font-stream PDF embedded font (sfnt) at offset 0x6ADB 4852 bytes
font_01_sfnt_off00007b67.bin
08bf37a513a6daa7325a304654a6688149439a71848ab3e59e903eea1803838c
pdf-font-stream PDF embedded font (sfnt) at offset 0x7B67 10224 bytes
font_02_sfnt_off00009e6c.bin
7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71
pdf-font-stream PDF embedded font (sfnt) at offset 0x9E6C 4324 bytes