Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d62385f73b302f3…

MALICIOUS

PDF

37.9 KB Created: 2020-09-13 07:16:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: eb383f71ca579a7b2665b9cd1326429e SHA-1: 13ef913e7565ef8f567faa29357617b5159b0a72 SHA-256: 6d62385f73b302f328a5987c183e9005d83ac1e7ac09b0edf47e19d7ac6eb3ac
154 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it points to known malicious infrastructure. It also exhibits PDF_SEO_LINK_FARM behavior, with numerous links to PDFs hosted on Shopify, likely as a tactic to appear legitimate or to obscure the malicious redirector. The embedded URL 'https://ttraff.link/wix?keyword=dungeons+and+dragons+3.5+monster+manual+3+pdf' is a primary indicator of malicious intent, likely serving as a gateway to a phishing or malware download page.

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.link/wix?keyword=dungeons+and+dragons+3.5+monster+manual+3+pdf
    • http://files.carpetcleaningmontecito.com/uploads/1/3/1/0/131069870/kidokoju_vatamuvonixe_rakupabudalo_vovanini.pdf
    • http://duradisa.aitorlajarin.info/uploads/1/3/1/3/131379844/rumepavasejo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/8180/9558/files/fusomodejezalizajixatedal.pdf
    • https://cdn.shopify.com/s/files/1/0435/7865/4883/files/button_click_change_background_color_android.pdf
    • https://cdn.shopify.com/s/files/1/0435/3848/1320/files/87746292396.pdf
    • https://cdn.shopify.com/s/files/1/0433/9571/1132/files/kimafezaxovogixegimotat.pdf
    • https://cdn.shopify.com/s/files/1/0437/8935/3117/files/5th_grade_math_addition_word_problems_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0435/9477/6739/files/viguku.pdf
    • https://cdn.shopify.com/s/files/1/0437/0409/0792/files/chemistry_practical_titration.pdf
    • https://cdn.shopify.com/s/files/1/0438/3227/9190/files/panera_bread_lunch_menu.pdf
    • https://cdn.shopify.com/s/files/1/0435/2724/1887/files/21672962275.pdf
    • http://www.wizards.com/default.asp?x=products/dndacc/179210000
    • 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_off000055d0.bin
bae28f28824052774175aac382cbb509bd30dc744dc0c077c8423687bbcf9661
pdf-font-stream PDF embedded font (sfnt) at offset 0x55D0 5680 bytes
font_01_sfnt_off00006922.bin
7fef4f9e66523bfa2581463ad3eda8285c35e6ef2253f25de49c4140bd891af6
pdf-font-stream PDF embedded font (sfnt) at offset 0x6922 9864 bytes