Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f98cc550ceef8b2…

MALICIOUS

PDF

45.8 KB Created: 2020-08-30 21:17:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6844630a6dbe649ba51637ed693db2a1 SHA-1: 1fd1b494029504a356eccae201955149b36b5fba SHA-256: 6f98cc550ceef8b2a6c9ba669da87dd4db89c6ef8302a5767d9b890402ee758f
154 Risk Score

Malware Insights

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

The PDF contains a link to a redirector URL, which is flagged as malicious. This redirector is associated with a link farm, suggesting an attempt to distribute malicious content or engage in SEO manipulation. The document body, though heavily obfuscated, contains text related to 'Gta san andreas mod apk download', indicating a lure for users seeking such content. The presence of embedded URLs and the ML classifier's high confidence score further support the malicious nature of this document.

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/wix?keyword=gta+san+andreas+mod+apk+download+200
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://static.usrfiles.com/ugd/5fd5c1_b81c1470695e406084a513421b601f25.pdf
    • https://static.usrfiles.com/ugd/b8c837_55ccc61bb7a942039f0ba64841579924.pdf
    • https://static.usrfiles.com/ugd/739437_76aa46723f6f4722a4c0057674f2a50c.pdf
    • https://static.usrfiles.com/ugd/a76634_4ed277cd39d74898afa2231d9267985e.pdf
    • https://cdn.shopify.com/s/files/1/0432/4678/0566/files/24890973964.pdf
    • https://cdn.shopify.com/s/files/1/0430/6622/8898/files/38917339793.pdf
    • https://cdn.shopify.com/s/files/1/0436/6408/1046/files/adapter_apple_to_android.pdf
    • https://cdn.shopify.com/s/files/1/0432/2567/7982/files/tervishoiut_kodus_vimalused.pdf
    • https://cdn.shopify.com/s/files/1/0434/2648/0295/files/69420646827.pdf
    • https://cdn.shopify.com/s/files/1/0441/0392/5912/files/kejegebedesetutevamabu.pdf
    • https://cdn.shopify.com/s/files/1/0439/2324/3176/files/87125385242.pdf
    • https://static.usrfiles.com/ugd/b8c837_a38d6fa4cb47484080ed3b800154c22e.pdf
    • https://static.usrfiles.com/ugd/f55bec_aaaa6e8fce4d43888e467587acd622a5.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006643.bin
8d8eb3d56a808cf5b8bc91e3242b815fffe53b3ee196f2297dde8fa9b8a5eeeb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6643 5308 bytes
font_01_sfnt_off00007848.bin
3943ed6fcd15e0302df0397ea65be17732a6def5d50b3e3a31ceaf734559939d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7848 10564 bytes
font_02_sfnt_off00009bca.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9BCA 4324 bytes

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