Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e8acf9f8b17bd52…

MALICIOUS

PDF

33.7 KB Created: 2020-10-04 03:46:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 6198c40396f092aef38e08b39e313831 SHA-1: e685a549ce3a4fa4a8a3ce21a310ac687cf718d7 SHA-256: 3e8acf9f8b17bd52ecfd63093d003760f4741feb8ddb873103ef2f138ee2a5d3
94 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector infrastructure, identified by the heuristic PDF_MALICIOUS_REDIRECTOR_LINK. The document body, though heavily obfuscated, contains the URL 'https://ttraff.club/pify?keyword=medium+dog+beds+petco', suggesting a phishing or redirection attempt. The ML classifier also strongly indicated maliciousness.

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.
  • 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.club/pify?keyword=medium+dog+beds+petco In PDF document text
    • https://site-1036900.mozfiles.com/files/1036900/49532500431.pdfIn PDF document text
    • http://files.atlantaalphaomicronpi.com/uploads/1/3/0/7/130776167/jilab_zujud_zugamawotuk.pdfIn PDF document text
    • http://ludabegi.adventureinmetals.com/uploads/1/3/1/1/131164211/fbb9cd9218a76.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0492/3041/3980/files/legend_of_zelda_breath_of_the_wild_desktop_wallpaper.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/6412/7388/files/5929451475.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/1771/7918/files/pirilamigixomizem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9471/9131/files/aristotle_vs_plato_epistemology.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/1560/9761/files/7653045681.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a9f0fe13-1686-40aa-81f9-adb3af7fad7e/60919790704.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dbd8a8c6-b91c-4bbb-8b09-c7031f7ddf2f/76060397446.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c43ef3b0-82ca-4938-bccc-ebb65a5e7433/vijokodesavirade.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6de19b86-c237-4794-8fda-571977cc80c5/supor.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000046cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x46CB 5200 bytes
SHA-256: eccc3b3dff3e8dabf265f40548374a804fb50c747085f24ddda94a536a20fed3
font_01_sfnt_off00005879.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5879 10008 bytes
SHA-256: c36af63e251c8fc8974d63b2eb37ca784384c1a6d149c2d2ebe7d81de242d1ad