Malicious PDF — malware analysis report

Static analysis result for SHA-256 5bbdd0a94075bc43…

MALICIOUS

PDF

41.3 KB Created: 2020-08-02 15:45:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2720b31f805f2e74aec05309228e6811 SHA-1: f412573597e2d4fedca585856b5033710bbe14c8 SHA-256: 5bbdd0a94075bc437ee63eaad9460442cc52d43b7da8afa21423e4f17171ff8c
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a mass of external links, with one identified as a malicious redirector pointing to 'ttraff.com'. The ML classifier also strongly flagged this PDF as malicious. The presence of numerous links, many hosted on Shopify, suggests a link farm or a phishing lure designed to direct users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=php+uploading+multiple+files
    • http://files.gracebible-rolla.com/uploads/1/3/2/6/132695492/mepog-mudut-mefev.pdf
    • http://files.plasticfreewilderness.org/uploads/1/3/0/9/130969699/xujuvuwudilel.pdf
    • http://files.innatdarden.com/uploads/1/3/0/7/130738988/turopabexafebor.pdf
    • http://files.theatelierllc.com/uploads/1/3/1/8/131856392/tivumesemutadefiveru.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/8561/0654/files/41074103029.pdf
    • https://cdn.shopify.com/s/files/1/0433/2647/2345/files/7206292079.pdf
    • https://cdn.shopify.com/s/files/1/0427/5847/1846/files/33298064453.pdf
    • https://cdn.shopify.com/s/files/1/0434/7248/6566/files/31401710301.pdf
    • https://cdn.shopify.com/s/files/1/0436/6453/9798/files/lanakugitenesupunaliso.pdf
    • https://cdn.shopify.com/s/files/1/0435/4015/2475/files/jiwivazisuvivawiz.pdf
    • https://cdn.shopify.com/s/files/1/0435/8048/9891/files/84535055952.pdf
    • https://cdn.shopify.com/s/files/1/0436/8711/6965/files/fillable_duplicate_fields.pdf
    • https://cdn.shopify.com/s/files/1/0428/8305/5782/files/39230042762.pdf
    • https://cdn.shopify.com/s/files/1/0430/3536/1442/files/80347274324.pdf
    • https://cdn.shopify.com/s/files/1/0432/0627/9330/files/wijomuso.pdf
    • https://cdn.shopify.com/s/files/1/0433/1329/9620/files/pavafezemivupixejozaxisid.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000063d1.bin
22f3e6029c6aac0a9113000cbe819aefe24f9cb0884f94179e0668ebd2b4ddb9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63D1 5360 bytes
font_01_sfnt_off000075f0.bin
36674a943bfc072302a818c9dc21fffa21c28f31f98b1cf2c99da3d70f57d79e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75F0 10084 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.