Malicious PDF — malware analysis report

Static analysis result for SHA-256 68d84f1d1e6365f7…

MALICIOUS

PDF

40.5 KB Created: 2020-08-25 14:08:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f096198ab529bb85ad9d88dfab53dacf SHA-1: 67c0ced642938182b613adcda508f2f763d73dee SHA-256: 68d84f1d1e6365f7764e88ceb194169d1ffd981b418c6a1de10ed902c590d703
162 Risk Score

Malware Insights

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

The PDF contains numerous links, including one pointing to a known malicious redirector at 'ttraff.com'. The document body also contains the same URL, suggesting a lure to download content. The presence of a 'download button' heuristic further supports this, indicating a phishing or scam attempt. No scripts were extracted, but the PDF structure and linked URLs are indicative of a malicious document designed to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=free+clock+face+template+with+minutes
    • http://setorofud.stmaryschoolchardon.org/uploads/1/3/0/8/130813765/bdf9dc4e5ac5d.pdf
    • http://files.artbytiffany.org/uploads/1/3/1/3/131379554/weninu_roguxevede_jowero_vebabogapa.pdf
    • http://gikuvelel.crackwisemag.com/uploads/1/3/0/7/130775935/kamodonupekagi.pdf
    • http://zilujuf.newlifemobilityyork.com/uploads/1/3/1/8/131856725/xidenutesejola-xapusam-kineg-gadimuvimar.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0452/8907/8946/files/cecil_medicine_25th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0431/4526/5318/files/93710786145.pdf
    • https://cdn.shopify.com/s/files/1/0433/9616/9886/files/83230537592.pdf
    • https://cdn.shopify.com/s/files/1/0430/1671/6437/files/telephone_billing_system_project_in_java.pdf
    • https://cdn.shopify.com/s/files/1/0431/0922/0501/files/how_to_minecraft_on_apple_computer.pdf
    • https://cdn.shopify.com/s/files/1/0430/7173/3917/files/94604191276.pdf
    • https://cdn.shopify.com/s/files/1/0430/5158/1597/files/valijadibiduzuxenaru.pdf
    • https://cdn.shopify.com/s/files/1/0438/2405/4429/files/facebook_for_nokia_e63_new_version.pdf
    • https://cdn.shopify.com/s/files/1/0430/1612/6625/files/9623142939.pdf
    • https://cdn.shopify.com/s/files/1/0432/5064/7202/files/68750260848.pdf
    • https://cdn.shopify.com/s/files/1/0434/4528/9127/files/89227628098.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_off000060e3.bin
0784cc2c1ea96b31eb10cd04d5696c744846e501d6fcf251411396f2e9b37c3a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60E3 5364 bytes
font_01_sfnt_off0000730f.bin
be8f077c7ca54eb8038dd810482b6c3a75bee1dbb86befaa16104214eec6cbe4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x730F 9980 bytes

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