Malicious PDF — malware analysis report

Static analysis result for SHA-256 964e0d3c4e680e8a…

MALICIOUS

PDF

57.4 KB Created: 2020-08-18 17:01:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d0b61418f6b3f52957d3ab90be749c82 SHA-1: fe4544802684ee4c0004f210b3a6963153a4e268 SHA-256: 964e0d3c4e680e8ab9ff294e242f14234ae4499701dd63b6f36bc20f211f60c4
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.ru/pify?keyword=c+template+class+enum'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on Shopify. The ML classifier also strongly indicated maliciousness. The document body, though heavily obfuscated, contains the same redirect URL, suggesting an attempt to lure users to a malicious site.

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.ru/pify?keyword=c+template+class+enum
    • http://xutij.secureallianceps.com/uploads/1/3/1/1/131164406/72d8d691.pdf
    • http://files.the-trump-timeline.com/uploads/1/3/1/0/131070207/dokafozukoxozawe.pdf
    • https://cdn.shopify.com/s/files/1/0432/0736/0667/files/74481234038.pdf
    • https://cdn.shopify.com/s/files/1/0429/2427/7923/files/49429777687.pdf
    • https://cdn.shopify.com/s/files/1/0428/2885/7503/files/asuran_fight_bgm_free.pdf
    • https://cdn.shopify.com/s/files/1/0431/4995/1138/files/fiwopawirutojasu.pdf
    • https://cdn.shopify.com/s/files/1/0439/8697/6926/files/slope_intercept_form_to_standard_form_calculator.pdf
    • https://cdn.shopify.com/s/files/1/0431/5637/3670/files/75011842198.pdf
    • https://cdn.shopify.com/s/files/1/0440/7446/7478/files/barry_lyndon_book.pdf
    • https://cdn.shopify.com/s/files/1/0432/6657/2452/files/18761320892.pdf
    • https://cdn.shopify.com/s/files/1/0429/4259/5239/files/canada_visa_application_form_imm_5257.pdf
    • https://cdn.shopify.com/s/files/1/0436/7400/9753/files/a_political_economy_of_africa_by_claude_ake_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/3188/8021/files/duvovabativomuseseta.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nomevorijodasulalo.pdf
    • https://cdn.shopify.com/s/files/1/0438/6386/7552/files/basics_of_r_programming_language.pdf
    • https://cdn.shopify.com/s/files/1/0435/5594/6655/files/9th_grade_biology_textbook.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/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008998.bin
91437e9d8044f66486c7b546ea9f823c1dfd78d002dd49542cb27fa70d9d667b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8998 4728 bytes
font_01_sfnt_off00009994.bin
5250f2737e61d28696374af98381c20024a3d9ca2715ccb83e548c8abab48236		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9994 15428 bytes
font_02_sfnt_off0000ca15.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCA15 4324 bytes

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