Malicious PDF — malware analysis report

Static analysis result for SHA-256 47edf4b50fb27acb…

MALICIOUS

PDF

65.6 KB Created: 2020-08-07 15:22:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fc15dc07cff6192e4fca3f0e4d5896b6 SHA-1: 3f3188d7fba3d8b05a48430d7a971f493de81206 SHA-256: 47edf4b50fb27acb2aff12e0f0939b629f5589e62bac615ed23cbec2b0834e74
152 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, the PDF exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on Shopify. The ML classifier strongly flagged this PDF as malicious. The primary intent appears to be directing users to malicious infrastructure via the 'ttraff.com' URL.

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.com/pify?keyword=class+chilopoda+pdf
    • http://vezosupob.h2repairalloys.net/uploads/1/3/1/4/131406893/wusobu-xesodixor-vekirigimorevi.pdf
    • http://files.fansofdeschutes.org/uploads/1/3/0/7/130740617/abe316e6bf.pdf
    • http://maxiv.vibrationaltorah.com/uploads/1/3/1/3/131384401/2983984.pdf
    • http://files.awakenhopeandwellness.ca/uploads/1/3/0/7/130739154/1079550.pdf
    • https://cdn.shopify.com/s/files/1/0430/9752/2329/files/68897090939.pdf
    • https://cdn.shopify.com/s/files/1/0431/0974/4789/files/27133274311.pdf
    • https://cdn.shopify.com/s/files/1/0440/2210/4229/files/84674534608.pdf
    • https://cdn.shopify.com/s/files/1/0429/7395/4204/files/38631964455.pdf
    • https://cdn.shopify.com/s/files/1/0435/3441/8072/files/29644254994.pdf
    • https://cdn.shopify.com/s/files/1/0428/4763/3575/files/14401850567.pdf
    • https://cdn.shopify.com/s/files/1/0428/2748/1255/files/tivipinenabosagawi.pdf
    • https://cdn.shopify.com/s/files/1/0430/6750/6841/files/xabixomavafegorabexoxovuj.pdf
    • https://cdn.shopify.com/s/files/1/0429/7159/4911/files/80202137224.pdf
    • https://cdn.shopify.com/s/files/1/0434/0023/3112/files/jalekuzofuwuzuwofageju.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_off0000b918.bin
648b6f8140630818420d9783981bdd3c6d5ec5e10d9386658da300b48c87d70d
pdf-font-stream PDF embedded font (sfnt) at offset 0xB918 5052 bytes
font_01_sfnt_off0000ca3d.bin
70b844f74996fcee5e1d27ce90af7085dab18ef8498285b96f5f41c426451930
pdf-font-stream PDF embedded font (sfnt) at offset 0xCA3D 1716 bytes
font_02_sfnt_off0000d2e3.bin
6cea939a3ef374d0906605b596288de672f0423162f7ad9784e65c6b23580bee
pdf-font-stream PDF embedded font (sfnt) at offset 0xD2E3 11164 bytes