Malicious PDF — malware analysis report

Static analysis result for SHA-256 64a1c229540237e1…

MALICIOUS

PDF

44.3 KB Created: 2020-08-04 16:06:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3d93e361f6c1aa4da279df44a25f1077 SHA-1: 7fc0c03da60094de207fb43781467cc546909834 SHA-256: 64a1c229540237e1ee4886772b66a51a2548345af3d6868cf3d090fd54efc689
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing indicating it points to known malicious redirector infrastructure. The ML classifier also strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains the URL https://ttraff.cc/pify?keyword=brighton+rock+greene+pdf, which is likely used to redirect users to a malicious site. The presence of many external PDF links suggests a link farm or SEO manipulation tactic.

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=brighton+rock+greene+pdf
    • http://files.competitiveathlete.us/uploads/1/3/1/0/131071063/vuzefotogepefuze.pdf
    • http://files.bakersbirdshop.com/uploads/1/3/1/1/131163834/gowiruso.pdf
    • http://files.seedsolutionsseedlabs.com/uploads/1/3/0/7/130776611/guviluvog.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0429/2250/8454/files/22973350972.pdf
    • https://cdn.shopify.com/s/files/1/0429/3325/6345/files/mugevazogajorajagonesaku.pdf
    • https://cdn.shopify.com/s/files/1/0430/3391/9645/files/17287144153.pdf
    • https://cdn.shopify.com/s/files/1/0429/8568/5153/files/zofejeke.pdf
    • https://cdn.shopify.com/s/files/1/0428/1945/3095/files/powozatijidix.pdf
    • https://cdn.shopify.com/s/files/1/0429/2929/1427/files/xusoburadoxadope.pdf
    • https://cdn.shopify.com/s/files/1/0432/3626/2052/files/assembler_des_images_en_en_ligne.pdf
    • https://cdn.shopify.com/s/files/1/0433/8037/5704/files/fututiwovurifogafasaz.pdf
    • https://cdn.shopify.com/s/files/1/0433/1172/6750/files/setupejumozoz.pdf
    • https://cdn.shopify.com/s/files/1/0434/9270/4408/files/muzewewa.pdf
    • https://cdn.shopify.com/s/files/1/0434/4102/9276/files/bumerenowepanifo.pdf
    • https://cdn.shopify.com/s/files/1/0431/8386/6018/files/rekikur.pdf
    • https://cdn.shopify.com/s/files/1/0429/9315/6259/files/zikawolezizufutofodasali.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_off00007064.bin
6a44bd4c4dee8359e053df1c10dd3a5b28722a863f91558e4707a048a5155f5b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7064 5112 bytes
font_01_sfnt_off000081cd.bin
4fe78e9c640bfd4bef13b12f27dcb0c1d0c2374ff09a03a07c4a7aec1c84ded5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x81CD 9996 bytes

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