Malicious PDF — malware analysis report

Static analysis result for SHA-256 d46333803685aeb5…

MALICIOUS

PDF

44.8 KB Created: 2020-08-15 06:52:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b8d475b5847cef78eff17cf11c00834e SHA-1: 8d68c7ec95feca1256290e85a8d76be4207f5262 SHA-256: d46333803685aeb5fd64886ca1335e721e1be373b88fa3d05d10b134aa47e822
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF contains multiple embedded links, with one heuristic specifically identifying a link to known malicious redirector infrastructure at 'https://ttraff.ru/wb?keyword=annual%20report%20pertamina%202017%20pdf'. Another heuristic indicates a PDF link farm, suggesting an attempt to distribute malicious content or engage in SEO abuse. The ML classifier also flagged this PDF with high confidence. No scripts were extracted, but the presence of numerous links points to a social engineering attack aiming to redirect users to harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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/wb?keyword=annual%20report%20pertamina%202017%20pdf
    • http://files.daventrydogtrainingclub.com/uploads/1/3/0/8/130873973/6745225.pdf
    • http://goburun.franklywithfaith.com/uploads/1/3/1/4/131411688/xulajelusomi.pdf
    • http://detikiba.redheadyogini.com/uploads/1/3/1/0/131069934/8609207.pdf
    • http://wuzogid.dammerungarts.com/uploads/1/3/1/6/131636719/4251476.pdf
    • http://files.cwa3112.org/uploads/1/3/1/4/131453818/xoguletib-lawel.pdf
    • https://cdn.shopify.com/s/files/1/0447/1137/9097/files/administration_of_justice_law_sri_lanka.pdf
    • https://cdn.shopify.com/s/files/1/0429/6150/2362/files/vogoxojexulof.pdf
    • https://cdn.shopify.com/s/files/1/0431/6997/2392/files/rezuvezogokovesekavarekow.pdf
    • https://cdn.shopify.com/s/files/1/0429/9322/1783/files/getulomuzukutewasomod.pdf
    • https://cdn.shopify.com/s/files/1/0427/7154/6279/files/29575797571.pdf
    • https://cdn.shopify.com/s/files/1/0431/7508/4193/files/78301026126.pdf
    • https://cdn.shopify.com/s/files/1/0432/5959/2864/files/administrao_financeira_stephen_ross.pdf
    • https://cdn.shopify.com/s/files/1/0432/0513/2445/files/sowene.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/58014629257.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lunugituvalu.pdf
    • https://cdn.shopify.com/s/files/1/0429/5675/1002/files/fugulurenofibobe.pdf
    • https://cdn.shopify.com/s/files/1/0429/3810/6023/files/27132033624.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_off00006cfd.bin
75fc7e24357742b55b7225704f15a2e5e8db6f355bed8e05484ef1bd3c33eb78
pdf-font-stream PDF embedded font (sfnt) at offset 0x6CFD 5404 bytes
font_01_sfnt_off00007f4f.bin
f088ee348cf6b65894e9ebc41fa050528bdbb83566d2ac6bd15cdad0433d1a7a
pdf-font-stream PDF embedded font (sfnt) at offset 0x7F4F 11712 bytes