Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d2013da340f4570…

MALICIOUS

PDF

44.8 KB Created: 2020-07-18 18:58:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2733467602e1d72330b300f037298b58 SHA-1: 3577cab10ce94f0909142e5b58587b1d901472bc SHA-256: 5d2013da340f45702fb2244da009df47edf0fa31bb9eb862a65994227ab4c426
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with one identified as a known malicious redirector. The ML classifier also flagged this PDF as malicious. The document body is heavily obfuscated, but the presence of numerous links suggests an attempt to lure users to external, potentially malicious, sites.

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/wb?keyword=money%20proverbs%20pdf
    • http://files.responseplumber.ca/uploads/1/3/2/6/132682739/wezurol-dapewux-kisifunisekup-wobetotavi.pdf
    • http://files.messiahfamilies.com/uploads/1/3/1/6/131606640/tovulu.pdf
    • http://files.cleanorganicsoap.com/uploads/1/3/1/6/131606133/3439321.pdf
    • http://files.troop420md.org/uploads/1/3/1/3/131382630/lelovaxurowuvid.pdf
    • http://files.daisiesandchalk.com/uploads/1/3/2/6/132681826/8042238.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/7404/4579/files/33390079883.pdf
    • https://cdn.shopify.com/s/files/1/0433/0379/6894/files/18244345186.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/89709194360.pdf
    • https://cdn.shopify.com/s/files/1/0430/3290/3829/files/25089503964.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/83759083977.pdf
    • https://lopititixuv.files.wordpress.com/2020/07/puvanodozag.pdf
    • https://pumuxuvodiji280722135.files.wordpress.com/2020/06/jusajewej.pdf
    • https://koropezanuxe.files.wordpress.com/2020/07/wevudumaxusodofobari.pdf
    • https://ravuvadon.files.wordpress.com/2020/07/23577701051.pdf
    • https://gemusemi.files.wordpress.com/2020/07/rumetixapukekagofades.pdf
    • https://cdn.shopify.com/s/files/1/0433/6025/6159/files/59179805745.pdf
    • https://cdn.shopify.com/s/files/1/0432/9209/8724/files/junoduxise.pdf
    • https://cdn.shopify.com/s/files/1/0432/2207/3506/files/82650004784.pdf
    • https://cdn.shopify.com/s/files/1/0428/0126/6851/files/baliboj.pdf
    • https://cdn.shopify.com/s/files/1/0428/7633/8335/files/xuzetuwerorolukeno.pdf
    • https://cdn.shopify.com/s/files/1/0432/0965/4434/files/jegek.pdf
    • https://cdn.shopify.com/s/files/1/0430/1979/6643/files/fekezikijilelexuxujak.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_off00007446.bin
72c414d7ff7aa4b1e9178da1630911d74e57484a55e9696142c943d5e56fc4b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7446 4760 bytes
font_01_sfnt_off00008475.bin
599a835a3b4cc28564c5f61edef159c910fa96d69d44858fd568dc54d411729c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8475 9756 bytes

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