Malicious PDF — malware analysis report

Static analysis result for SHA-256 7bc4d3113b0d98d4…

MALICIOUS

PDF

46.2 KB Created: 2020-07-29 06:13:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 711d8b535b425f0f3d17e3f18cb3267d SHA-1: a7022d8d82037c5ac8ef1260ab39d0a336032769 SHA-256: 7bc4d3113b0d98d439125275d1efc1bcca3c8333d83060636caea07d14d9df7b
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically identified as a redirector to malicious infrastructure. The document body, though heavily obfuscated, contains text related to search queries, suggesting a lure. The presence of multiple PDF links, many hosted on Shopify, indicates a link farm designed to obscure the ultimate destination and potentially spread malicious content.

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/pify?keyword=new+bhojpuri+song+2019+mp4
    • http://files.trainingaid.co.uk/uploads/1/3/1/4/131410234/suravexomavofedire.pdf
    • http://files.wasatchballet.com/uploads/1/3/1/8/131856330/jalovuzimona_mabakuvajemeza.pdf
    • http://files.donjenkinsjewelers.com/uploads/1/3/1/4/131453535/254469.pdf
    • http://files.stjamescheboygan.org/uploads/1/3/0/8/130814229/notuvuza.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/0230/6468/files/95383204379.pdf
    • https://cdn.shopify.com/s/files/1/0428/5346/6271/files/97762357389.pdf
    • https://cdn.shopify.com/s/files/1/0433/3735/1326/files/66396065955.pdf
    • https://cdn.shopify.com/s/files/1/0437/6972/5085/files/metubufifodewa.pdf
    • https://cdn.shopify.com/s/files/1/0433/5638/9528/files/duliruva.pdf
    • https://cdn.shopify.com/s/files/1/0434/5279/2982/files/bememirerapabokamelen.pdf
    • https://cdn.shopify.com/s/files/1/0430/3680/3233/files/87627517948.pdf
    • https://cdn.shopify.com/s/files/1/0436/0414/8381/files/fefubuvol.pdf
    • https://cdn.shopify.com/s/files/1/0429/6579/4969/files/13470397792.pdf
    • https://cdn.shopify.com/s/files/1/0429/6382/8895/files/76231820738.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000057b4.bin
ea3b328eef9530f387099af7660a6e663840f74817d0a83ffa9889fb67d3c2be		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57B4 5640 bytes
font_01_sfnt_off00006ac6.bin
8c892abb061285825305a44691d70dcb7225087c681f0b415a01eae887263b22		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6AC6 9748 bytes
font_02_sfnt_off00008c56.bin
1df41416ece054d3cca32f135e48dc95f4d9c8a2bff4ba4edba1d14e21aabef6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8C56 18776 bytes

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