Malicious PDF — malware analysis report

Static analysis result for SHA-256 060ae4b5ac2a5e3b…

MALICIOUS

PDF

42.4 KB Created: 2020-08-21 18:47:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9975c0f565190ecd7540b1e9be87f57f SHA-1: 544a28aafcbe6fae7293cb4b9d78ed756214209b SHA-256: 060ae4b5ac2a5e3bcf8b02d3675f4f5e82fecb84d44819116f4c82bd93909c08
154 Risk Score

Malware Insights

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

The PDF contains a mass of external links, including one pointing to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains a URL that is likely intended to lead the user to malicious content. The presence of numerous PDF links suggests an attempt to create a link farm or distribute further 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=male+fashion+color+guide
    • http://files.mommasfamilybulldogs.com/uploads/1/3/0/8/130874086/bodava-rasapovagasof-mukotawuxoma.pdf
    • http://vivave.donjitsudodojo.com/uploads/1/3/1/4/131453197/wapixiduvanitigom.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/5058/1662/files/principles_of_polymerization_solution.pdf
    • https://cdn.shopify.com/s/files/1/0431/1502/0448/files/85440162028.pdf
    • https://cdn.shopify.com/s/files/1/0436/4910/6080/files/mesoamerican_world_crossword_answer_key.pdf
    • https://cdn.shopify.com/s/files/1/0430/7350/3386/files/wexawureziriw.pdf
    • https://cdn.shopify.com/s/files/1/0429/8375/1831/files/kaspersky_battery_life_saver_apk.pdf
    • https://cdn.shopify.com/s/files/1/0444/2734/6086/files/gonagesifojasobitave.pdf
    • https://cdn.shopify.com/s/files/1/0432/5687/3128/files/tukededeziwiwajujesawoli.pdf
    • https://cdn.shopify.com/s/files/1/0444/6827/3319/files/npt_tap_drill_chart.pdf
    • https://cdn.shopify.com/s/files/1/0430/6495/0945/files/23353361976.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_off00006815.bin
5c4d171cb527d73bf3c8077c7560a141939942dd1b82a69ac8975b5bce678c75
pdf-font-stream PDF embedded font (sfnt) at offset 0x6815 5288 bytes
font_01_sfnt_off00007a0a.bin
01c156c3c6565b3a70e207e6769c211016d0852ae058868b244fa71442ceba13
pdf-font-stream PDF embedded font (sfnt) at offset 0x7A0A 10180 bytes