Malicious PDF — malware analysis report

Static analysis result for SHA-256 61f08c19eec3ead2…

MALICIOUS

PDF

39.3 KB Created: 2020-08-31 12:51:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5f284af7872dbe07bbf5120f31010099 SHA-1: c40cf1a2258e5e4788464136f78d2a2e6b9d8f23 SHA-256: 61f08c19eec3ead268300be140a89467601302e838d92a805eea0c832c0e17c6
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 primary malicious URL identified is ttraff.com, which is used in conjunction with a keyword related to firearms. While the document body is heavily obfuscated, the presence of a malicious redirector and a large number of external links strongly suggests a phishing or malicious redirection attempt.

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/wix?keyword=browning+bps+shotgun+stocks
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0449/9308/5598/files/artificial_intelligence_by_rich_and_knight_full.pdf
    • https://cdn.shopify.com/s/files/1/0432/5651/2667/files/31173853844.pdf
    • https://cdn.shopify.com/s/files/1/0428/9773/5836/files/nigexalirorakaje.pdf
    • https://cdn.shopify.com/s/files/1/0433/7372/3800/files/railway_booking_status_information.pdf
    • https://cdn.shopify.com/s/files/1/0440/6935/5670/files/uninstall_tomcat_7_ubuntu.pdf
    • https://cdn.shopify.com/s/files/1/0459/9349/2639/files/lirik_bts_answer_love_myself.pdf
    • https://cdn.shopify.com/s/files/1/0429/2732/5343/files/tor_browser_folder.pdf
    • https://cdn.shopify.com/s/files/1/0437/1228/2789/files/savilizir.pdf
    • https://cdn.shopify.com/s/files/1/0431/4782/1212/files/tnpsc_current_affairs_february_2020_in_english.pdf
    • https://cdn.shopify.com/s/files/1/0430/3850/7169/files/article_writing_examples_for_class_12.pdf
    • https://cdn.shopify.com/s/files/1/0431/7950/7880/files/aggravation_game_rules.pdf
    • https://cdn.shopify.com/s/files/1/0435/9297/4499/files/big_data_analysis_tutorial_point.pdf
    • https://cdn.shopify.com/s/files/1/0434/4905/7432/files/androids_saga_astounding_science_fiction.pdf
    • https://cdn.shopify.com/s/files/1/0431/0004/5469/files/pumuwamozuzezutuso.pdf
    • https://static.usrfiles.com/ugd/1849a1_7434fcd0e15b494aaad3ac46d1d520da.pdf
    • https://static.usrfiles.com/ugd/3aca14_1182a93de98f4c799078c4054d3ee4cc.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_off00005b2c.bin
88d8798dfc3d507faf3846dad8b86ef9cb91b87116ae2b83c9a653b63d8a2ac6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B2C 5296 bytes
font_01_sfnt_off00006d4d.bin
2c0df11ad8a8f14b53f5589e1a4ec0bffe9250b74e6e0302d7bbf383fa7630aa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D4D 10320 bytes

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