Malicious PDF — malware analysis report

Static analysis result for SHA-256 07e82025f028ec34…

MALICIOUS

PDF

34.0 KB Created: 2020-08-21 21:59:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d4a2407f805e4c9c8ae7c2c3f903178c SHA-1: eab784121c7805acbb1b83d833a9beef10ab7ea5 SHA-256: 07e82025f028ec342ef1853bba6ee262dcd52bf4f4698a6495a1cfe12599e53f
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains text that appears to be a lure for sheet music, and the PDF itself is structured as a link farm. This suggests an attempt to direct users to malicious sites, likely for phishing or malware delivery.

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.ru/pify?keyword=draw+me+nearer+meredith+andrews+sheet+music
    • http://files.brightonfd.com/uploads/1/3/0/9/130969192/rogilagavoxidojora.pdf
    • http://files.edistotitle.com/uploads/1/3/2/6/132681951/ponazemisowi.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0437/9262/9917/files/wugogotezesiloponovajojer.pdf
    • https://cdn.shopify.com/s/files/1/0431/1059/6765/files/spider_solitaire_aarp.pdf
    • https://cdn.shopify.com/s/files/1/0428/0595/2671/files/20062839498.pdf
    • https://cdn.shopify.com/s/files/1/0446/5822/9411/files/honda_civic_owners_manual.pdf
    • https://cdn.shopify.com/s/files/1/0429/5337/5897/files/89078549757.pdf
    • https://cdn.shopify.com/s/files/1/0434/6429/4557/files/jajutasono.pdf
    • https://cdn.shopify.com/s/files/1/0437/6834/8829/files/kuwatugogebopekowuk.pdf
    • https://cdn.shopify.com/s/files/1/0433/4452/7511/files/27617327896.pdf
    • https://cdn.shopify.com/s/files/1/0431/6567/9776/files/mosusiberolap.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mukevomisuso.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_off00004721.bin
23ebbb0ee94aa49d4b88e35ce1da38db10bf13594e15e1b7d50e08fdf23039a6
pdf-font-stream PDF embedded font (sfnt) at offset 0x4721 5240 bytes
font_01_sfnt_off000058ce.bin
7d8b55e1e2dc2caa4f6ce3ac6e726fd11f77c52c3f193efb115c891e9cd78a9b
pdf-font-stream PDF embedded font (sfnt) at offset 0x58CE 10060 bytes