Malicious PDF — malware analysis report

Static analysis result for SHA-256 05d228537750f3d9…

MALICIOUS

PDF

42.6 KB Created: 2020-08-20 13:43:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 256947a74b4b9521adfce04ea9b47611 SHA-1: 9b6c5f5871f073220a69bd10e6b910e8c397ed0b SHA-256: 05d228537750f3d95b8185ccd3ece25568dce24f9b4e2fe5ee13b230a4d0bdaa
154 Risk Score

Malware Insights

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

This PDF file contains a large number of embedded links, many of which point to a link farm designed to manipulate search engine results. One prominent URL, 'https://ttraff.com/pify?keyword=angular+official+documentation+pdf', is identified as a malicious redirector. The document body, though heavily obfuscated, contains references to this URL and other PDF files, suggesting a phishing or scam attempt disguised as official documentation.

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=angular+official+documentation+pdf
    • http://sivapomat.tylewiscancerfoundation.org/uploads/1/3/0/7/130738971/e2496e5c90316.pdf
    • http://files.roberthinds.net/uploads/1/3/1/4/131483138/jidufus.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0435/1187/3688/files/bacs_awacs_advice_report.pdf
    • https://cdn.shopify.com/s/files/1/0431/6738/3716/files/tesotovomeso.pdf
    • https://cdn.shopify.com/s/files/1/0448/0129/4496/files/zatezozijenu.pdf
    • https://cdn.shopify.com/s/files/1/0432/6260/7520/files/zajitepekotem.pdf
    • https://cdn.shopify.com/s/files/1/0429/5937/2439/files/8899188675.pdf
    • https://cdn.shopify.com/s/files/1/0435/9212/2536/files/97542355600.pdf
    • https://cdn.shopify.com/s/files/1/0428/9154/2681/files/4988047420.pdf
    • https://cdn.shopify.com/s/files/1/0431/6961/1930/files/74145785501.pdf
    • https://cdn.shopify.com/s/files/1/0433/5671/7205/files/43702214843.pdf
    • https://cdn.shopify.com/s/files/1/0437/9426/8320/files/fesukofasimaze.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_off00005e48.bin
f77ffe4fcd95d04b17016362d925ab8898090bd04af98de365c332182dcc0cfe
pdf-font-stream PDF embedded font (sfnt) at offset 0x5E48 5284 bytes
font_01_sfnt_off0000702b.bin
fbb437a57f80cfdc6c773a81e8a13da3a1662ea1765c75c912888bd4067589e3
pdf-font-stream PDF embedded font (sfnt) at offset 0x702B 14376 bytes