Malicious PDF — malware analysis report

Static analysis result for SHA-256 40b58ed56e48be55…

MALICIOUS

PDF

46.7 KB Created: 2020-08-07 14:07:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0344b7a3c2be06c16f23104f138b1466 SHA-1: 0cd50ac378df9dc0b8337107d324cfa726d5e651 SHA-256: 40b58ed56e48be5548e512d633f7b9caf6fe78aec5b1dba071bbc4fa89e4668d
150 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=fmea+process+steps+pdf', disguised as a document about 'fmea process steps'. This indicates a phishing or social engineering attempt to redirect the user to malicious infrastructure. The presence of numerous other PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to increase visibility. No scripts were extracted, but the primary attack vector is the malicious URL embedded within the document.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=fmea+process+steps+pdf
    • http://files.cavanaughcoastalcoaching.com/uploads/1/3/1/3/131381658/9a537087b1d.pdf
    • http://files.gaiatreeshala.com/uploads/1/3/1/4/131406811/getuxisukuxalag.pdf
    • http://files.seamstobedone.com/uploads/1/3/1/6/131606431/690938.pdf
    • https://cdn.shopify.com/s/files/1/0433/5301/4423/files/72981182470.pdf
    • https://cdn.shopify.com/s/files/1/0430/7389/6602/files/bekuko.pdf
    • https://cdn.shopify.com/s/files/1/0428/3419/8684/files/bejutudifodokawaka.pdf
    • https://cdn.shopify.com/s/files/1/0427/8370/3206/files/pajetunorazukewuk.pdf
    • https://cdn.shopify.com/s/files/1/0431/7013/6218/files/jidedurokudoloxizozan.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/15138334831.pdf
    • https://cdn.shopify.com/s/files/1/0432/9707/9460/files/52346956606.pdf
    • https://cdn.shopify.com/s/files/1/0433/8289/8840/files/38320157442.pdf
    • https://cdn.shopify.com/s/files/1/0436/9294/9658/files/45238428569.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_off00006d03.bin
05a4722bd803294162935bf1cf3fcfb21ce52f6427f6c44730a147d948f6d7e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D03 4860 bytes
font_01_sfnt_off00007d7c.bin
e52c3c070b0122ce5169766bf1d0e5f4c84af72faa84833cf7f7c991c41c169a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D7C 10060 bytes
font_02_sfnt_off00009fe4.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9FE4 4324 bytes

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