Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9b0aca513e1d09e…

MALICIOUS

PDF

39.6 KB Created: 2020-11-01 23:33:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0374e19f892fa223c3bf82c018e940ca SHA-1: 1a4024c3fe693b3cb4b768b0ce15098ca42d0726 SHA-256: e9b0aca513e1d09e9bdb789c441a9bc88cb267bcefdf62a50ca38ad789013b56
162 Risk Score

Malware Insights

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

This PDF file contains numerous embedded links, many of which point to redirector infrastructure and link farms, indicating a phishing or scam attempt. The document body, though heavily obfuscated, contains a search query that likely serves as a lure. The presence of multiple malicious redirector links strongly suggests an attempt to lead the user to a malicious website.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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/123?keyword=lisa+rinna+haircut+images
    • https://likoxijisopo.weebly.com/uploads/1/3/4/4/134460370/xisaworitil.pdf
    • https://cdn-cms.f-static.net/uploads/4390052/normal_5f95c547f056b.pdf
    • https://miboxijudowisu.weebly.com/uploads/1/3/4/4/134491333/kemixavaxizov_rilojoxulebo_bowoli_maxelagevonuk.pdf
    • https://cdn-cms.f-static.net/uploads/4380228/normal_5f8be0a062fc4.pdf
    • https://judemozosuduj.weebly.com/uploads/1/3/4/3/134306717/runalanifu_powiverobip_fexasege_wejopob.pdf
    • https://julapaxukej.weebly.com/uploads/1/3/4/4/134492969/6788114.pdf
    • https://vefozifus.weebly.com/uploads/1/3/4/3/134382693/nilujepajuv.pdf
    • https://morurotefat.weebly.com/uploads/1/3/4/3/134317018/c87014882.pdf
    • https://giwirakixa.weebly.com/uploads/1/3/3/9/133999144/dinerotanogofovuv.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/zesotat/64553552867.pdf
    • https://cdn.shopify.com/s/files/1/0494/0998/2631/files/febivifamudab.pdf
    • https://uploads.strikinglycdn.com/files/ae5cf1e0-63cb-43a1-ba57-c4c9214c71ca/sobukejizi.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_off00005d51.bin
5cf82b722327a2ae20ee690aea5d2b6dd09b6e2e483c755913305d936db3ed21
pdf-font-stream PDF embedded font (sfnt) at offset 0x5D51 5120 bytes
font_01_sfnt_off00006e95.bin
d3532d65d3d67d1d64f9a40c14087e020750b1511280e7a8a1ddf198d88ba2b6
pdf-font-stream PDF embedded font (sfnt) at offset 0x6E95 10568 bytes