Malicious PDF — malware analysis report

Static analysis result for SHA-256 85633ec2aadf79f3…

MALICIOUS

PDF

43.5 KB Created: 2020-08-14 02:58:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d5606125b50c13730daa289370f532e2 SHA-1: 6a052adaadc552f389fe061cc222ba8a8b9c3715 SHA-256: 85633ec2aadf79f399537ae91528b1b4ff33b185252c077e2bd13e758006cb01
152 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector infrastructure at 'https://ttraff.cc/pify?keyword=venous+malformation+surgery+recovery'. The ML classifier strongly flagged this PDF as malicious, and the presence of a link farm further supports a malicious intent, likely for phishing or malware delivery. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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=venous+malformation+surgery+recovery
    • http://files.mstreacyloves2travel.com/uploads/1/3/1/1/131164314/dogijukezixiw-lesugopaligew-gebej-zugijugaj.pdf
    • http://files.eastcobbyankees.com/uploads/1/3/2/7/132710624/082b695797.pdf
    • http://files.foothill-highlands-rotary-wine-tasting.org/uploads/1/3/0/8/130874090/5250741.pdf
    • http://files.leombirmingham.com/uploads/1/3/1/3/131383318/7e7c2b3aab085f.pdf
    • https://cdn.shopify.com/s/files/1/0430/9070/6589/files/gakafotutajagetegigo.pdf
    • https://cdn.shopify.com/s/files/1/0437/9266/2688/files/remetuzajub.pdf
    • https://cdn.shopify.com/s/files/1/0430/1104/7575/files/anabolicos_efectos_secundarios.pdf
    • https://cdn.shopify.com/s/files/1/0433/6995/5486/files/rufumerexon.pdf
    • https://cdn.shopify.com/s/files/1/0433/5144/1560/files/nobivexuvalikukebu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9291/8937/files/fabuguginejorov.pdf
    • https://cdn.shopify.com/s/files/1/0430/7963/1012/files/51957974545.pdf
    • https://cdn.shopify.com/s/files/1/0430/4856/6938/files/nepuzasamuleruxapej.pdf
    • https://cdn.shopify.com/s/files/1/0430/8621/7383/files/pasonaveremuved.pdf
    • https://cdn.shopify.com/s/files/1/0430/9765/3397/files/posafovogivosux.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pisanebemewamabojesodid.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_off000061bc.bin
3a5b3d0b64dbad5205b6d0b5ac83225b4d916216e9e75bbfb1dafb6db0028fd0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61BC 5208 bytes
font_01_sfnt_off00007366.bin
a65dec7ec7a54a0d92628eeab49abdd9f5af9ed04c24190e7443210e84fab967		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7366 9252 bytes
font_02_sfnt_off00009301.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9301 4324 bytes

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