Malicious PDF — malware analysis report

Static analysis result for SHA-256 6cc403b6d9b3d27a…

MALICIOUS

PDF

40.6 KB Created: 2020-08-20 19:00:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e6b8bcb5ef57301d00726602c9afb632 SHA-1: 11ccc56d55931cddcfaf8979a4acb3b5be67076e SHA-256: 6cc403b6d9b3d27a6edbffacd60fcd58ce7a2f8ee1278abb23f3c20ef4c08304
154 Risk Score

Malware Insights

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

This PDF file contains a large number of embedded links, many of which point to a link farm designed to redirect users to potentially malicious sites. The primary redirector URL identified is ttraff.com, which is flagged as malicious. While no scripts were directly extracted, the PDF structure and embedded URLs strongly suggest an attempt to lead users to harmful content, likely as part of a phishing or scam campaign.

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.com/pify?keyword=bunshinsaba+3+sub+indo
    • http://fumivire.sparklove.info/uploads/1/3/1/1/131164250/jarewikopapovesasi.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/3002/0247/files/xidudebizuzu.pdf
    • https://cdn.shopify.com/s/files/1/0434/1910/7480/files/cido_carbonico.pdf
    • https://cdn.shopify.com/s/files/1/0433/8683/0998/files/dupigoxoz.pdf
    • https://cdn.shopify.com/s/files/1/0434/1386/4604/files/cocoyam_starch.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/89089693040.pdf
    • https://cdn.shopify.com/s/files/1/0437/0310/7752/files/glencoe_physical_science_textbook_answers.pdf
    • https://cdn.shopify.com/s/files/1/0433/8181/7494/files/cowlitz_river_fly_fishing_report.pdf
    • https://cdn.shopify.com/s/files/1/0439/8999/1582/files/dissertation_acknowledgements_examples.pdf
    • https://cdn.shopify.com/s/files/1/0445/6821/5716/files/basel_3_file.pdf
    • https://cdn.shopify.com/s/files/1/0432/1558/5448/files/statistical_methods_for_astronomical_data_analysis.pdf
    • https://cdn.shopify.com/s/files/1/0428/2020/6758/files/13587534154.pdf
    • https://cdn.shopify.com/s/files/1/0432/0264/2075/files/wavixuzanejiniwuwokip.pdf
    • https://cdn.shopify.com/s/files/1/0432/0329/7438/files/jingle_bell_song_video_free.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_off00005315.bin
6bd0efc9bc0655ea73cd5443d4ae9599e7ecaeed3b7bce1feac793206c03b207		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5315 3612 bytes
font_01_sfnt_off00005fdf.bin
00a2b1193b7e8105beb26e6cecabfeaf9884b178851e75c9545eaadbcd064c1f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FDF 5140 bytes
font_02_sfnt_off00007149.bin
8cc800d97f61716a2203465a3fc415089967d17df943ddaa4c295d4d9b7208b9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7149 10740 bytes

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