Malicious PDF — malware analysis report

Static analysis result for SHA-256 edb09a6c7a78af6b…

MALICIOUS

PDF

89.1 KB Created: 2020-08-07 03:56:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c99e54929c9bd9dfa98f2124358d578c SHA-1: 6be89295d13e81dc24cf4b1e874ce98c3be4e42b SHA-256: edb09a6c7a78af6b9529eb37611d28d3ec8e27d996ebd2b85d5eb3ed605b767c
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'. This URL is likely used to redirect the user to a malicious site for phishing or malware delivery. The document body, though heavily obfuscated, contains the same URL, reinforcing its malicious intent. The ML classifier also flagged this PDF with high confidence.

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=prevention+of+sc+st+atrocities+act+pdf
    • http://files.thissoutherngirlcan.com/uploads/1/3/1/4/131438071/1909a96826b.pdf
    • http://files.stcatherinesbrynamman.org/uploads/1/3/1/3/131380612/befud-gexire-dagawuwe.pdf
    • http://files.spiritualitycircle.com/uploads/1/3/1/4/131453252/9598448.pdf
    • http://pinixew.theprideofsouthside.com/uploads/1/3/1/0/131070604/2c228bb1642.pdf
    • http://rijeso.marcomenini.com/uploads/1/3/2/6/132681670/6231680.pdf
    • https://cdn.shopify.c
    • https://cdn.shopify.com/s/files/1/0430/9313/1425/files/wudaganoresikuwo.pdf
    • https://cdn.shopify.com/s/files/1/0445/5032/4388/files/harvard_bluebook_19th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0428/5674/3079/files/6580955374.pdf
    • https://cdn.shopify.com/s/files/1/0430/1602/8309/files/23216225562.pdf
    • https://cdn.shopify.com/s/files/1/0434/6016/5797/files/suzixa.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/viruxirekosarobavogerij.pdf
    • https://cdn.shopify.com/s/files/1/0434/6131/2676/files/woxewolapazox.pdf
    • https://cdn.shopify.com/s/files/1/0428/5834/8700/files/xabaputujonasor.pdf
    • https://cdn.shopify.com/s/files/1/0433/7015/2088/files/15917017896.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/96056065099.pdf
    • https://cdn.shopify.com/s/files/1/0427/4746/1788/files/nogimawuxupulejo.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011f86.bin
dc6e9340199c55ac5ff2d5f609bebe51eeb3287ec4d4172571fda35e16f5290a
pdf-font-stream PDF embedded font (sfnt) at offset 0x11F86 5180 bytes
font_01_sfnt_off00013141.bin
6d13d9c11601a8292183b63f811bc6b617ae2c21eee7789520ba89e8ff82e183
pdf-font-stream PDF embedded font (sfnt) at offset 0x13141 10936 bytes