Malicious PDF — malware analysis report

Static analysis result for SHA-256 163fae36d8e2b7ee…

MALICIOUS

PDF

45.6 KB Created: 2020-08-03 14:54:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7d6cd98296c5a4a5080e8564da14bc79 SHA-1: f30d8625878cd95bf02cfa0b332615736c6020bc SHA-256: 163fae36d8e2b7ee8afb98c2db6f134a191bae372101bc37234d83e4f97d77dd
154 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to Shopify domains, but one critical link redirects to `https://ttraff.com/pify?keyword=anticancer+david+servan+schreiber+pdf`. This URL is flagged as a malicious redirector. The document body, though heavily obfuscated, contains this same URL, indicating a deliberate attempt to lead users to malicious content. The ML classifier also strongly flagged this PDF as malicious.

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=anticancer+david+servan+schreiber+pdf
    • http://files.thebeautybarracuda.com/uploads/1/3/0/7/130775639/gabafo-zafinaxamafomot.pdf
    • http://files.shaunandken.com/uploads/1/3/1/4/131438046/6955dc.pdf
    • http://files.maisonbergdorf.ch/uploads/1/3/1/1/131164424/gapudil_bofisudulo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0435/2226/1143/files/bevupavelanuguluvez.pdf
    • https://cdn.shopify.com/s/files/1/0433/4790/2622/files/voganenorusezefitawi.pdf
    • https://cdn.shopify.com/s/files/1/0431/2439/2087/files/osho_books.pdf
    • https://cdn.shopify.com/s/files/1/0436/9468/6376/files/90182047945.pdf
    • https://cdn.shopify.com/s/files/1/0433/9970/8821/files/wapabemepuro.pdf
    • https://cdn.shopify.com/s/files/1/0428/4694/5436/files/38601187842.pdf
    • https://cdn.shopify.com/s/files/1/0431/3278/0695/files/83376418488.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sividejujim.pdf
    • https://cdn.shopify.com/s/files/1/0429/1559/4393/files/monumegasuwipijuzu.pdf
    • https://cdn.shopify.com/s/files/1/0433/7015/2088/files/engineer_cosmetic_loadouts.pdf
    • https://cdn.shopify.com/s/files/1/0434/3490/1660/files/50538213934.pdf
    • https://cdn.shopify.com/s/files/1/0429/9699/0115/files/punekuw.pdf
    • https://cdn.shopify.com/s/files/1/0432/9524/4441/files/sos_schlongs_of_skyrim.pdf
    • https://cdn.shopify.com/s/files/1/0431/4166/0826/files/jejigofam.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_off000072c6.bin
95769533e246bd6340327b3bcc0d00ae3c7bcc531a9165cf6207cde5d40d81a7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72C6 5400 bytes
font_01_sfnt_off00008523.bin
8629c394608c858e5247fb4215cf1369f193c7d60effd2411dd16cfe8a169ef0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8523 10464 bytes

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