Malicious PDF — malware analysis report

Static analysis result for SHA-256 10792425a63209e8…

MALICIOUS

PDF

47.5 KB Created: 2020-08-28 03:43:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6745de26755e9b6d957ed11db3b95f12 SHA-1: ac843573e4f369d05baf04b202e05d439c59752c SHA-256: 10792425a63209e8621da684a41ca16bd87db5a71b9238199311dd338ba2afdc
162 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=lspd+vehicle+pack'. Additionally, it exhibits characteristics of a PDF link farm, suggesting an attempt to distribute or obscure malicious URLs. The presence of a "download" button lure further supports a malicious intent to trick users into interacting with the document.

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.cc/pify?keyword=lspd+vehicle+pack
    • http://files.senbisamassagetherapy.co.uk/uploads/1/3/0/8/130813778/2731752.pdf
    • http://files.ipestcontrols.com.au/uploads/1/3/1/4/131453146/dulorufigomasisox.pdf
    • http://donide.inspectnj.net/uploads/1/3/1/3/131398455/fovunivu.pdf
    • http://files.seashells-nursery.org/uploads/1/3/0/7/130739238/9933c619.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0449/9944/2590/files/double_cardan_joint.pdf
    • https://cdn.shopify.com/s/files/1/0432/9222/9797/files/barangay_election_2020_guidelines.pdf
    • https://cdn.shopify.com/s/files/1/0431/1187/4716/files/alt_codes_windows_10.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/54344474436.pdf
    • https://cdn.shopify.com/s/files/1/0427/8799/5807/files/nuratexutoxasaxumuzol.pdf
    • https://cdn.shopify.com/s/files/1/0428/8957/6601/files/29005412056.pdf
    • https://cdn.shopify.com/s/files/1/0430/0508/3811/files/94803989297.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/
    • https://savannah.gnu.org/projects/freefont/
    • http://www.gnu.org/licenses/
    • http://www.gnu.org/copyleft/gpl.html
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005503.bin
705a40f2f1299da93398ac562f39fb8e280a7b0d058145836d6dafd55d8ad212		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5503 6812 bytes
font_01_sfnt_off00006636.bin
34e70527b713f5d4155b4989d3669790b7a53546ed9c1cfe577e621b60cfdb93		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6636 5128 bytes
font_02_sfnt_off000077ae.bin
95838ad6e579fd889638ffc3522229ca1245bdbff7f1409fbade5702bf32fd84		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77AE 10456 bytes
font_03_sfnt_off00009bb2.bin
58b04abd4a2cde557a820e918121ec9738f9de37d4949e7b8c9e4ecf18f5695c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9BB2 16164 bytes

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