Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c49692b251a887e…

MALICIOUS

PDF

53.4 KB Created: 2020-08-31 23:52:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ef8f8808bd2d1d28a28e3b7ff23d75ad SHA-1: f5a9f8c2cfd994234997cdc0116a0eed2514a059 SHA-256: 1c49692b251a887ebea038e513b20ef21b398b937c3d30abdd2c0ff7acb5ade4
152 Risk Score

Malware Insights

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

The PDF contains a link farm designed to lure users to malicious redirectors, specifically identified by the heuristic PDF_MALICIOUS_REDIRECTOR_LINK. The primary malicious URL is https://ttraff.cc/wix?keyword=bangla+natok+full++mp4, which is likely used to deliver a secondary payload. The document body and embedded links suggest a social engineering tactic to trick users into clicking the malicious link.

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=bangla+natok+full++mp4
    • https://cdn.shopify.com/s/files/1/0430/8638/1210/files/jakutufagikebijusit.pdf
    • https://cdn.shopify.com/s/files/1/0440/2610/1910/files/if_function_in_excel_with_example.pdf
    • https://cdn.shopify.com/s/files/1/0432/2423/6199/files/automation_testing_resume_format.pdf
    • https://cdn.shopify.com/s/files/1/0430/2431/8618/files/blade_and_soul_gunslinger_guide_2018.pdf
    • https://cdn.shopify.com/s/files/1/0435/5185/0647/files/scientific_management_theory_of_public_administration.pdf
    • https://cdn.shopify.com/s/files/1/0433/5943/6968/files/curva_de_calibracion.pdf
    • https://cdn.shopify.com/s/files/1/0429/0487/9267/files/dixewabuburujifi.pdf
    • https://cdn.shopify.com/s/files/1/0436/7591/0294/files/holographic_universe_book.pdf
    • https://static.usrfiles.com/ugd/b8c837_8a137896d67c4e77980d30d20b4a3800.pdf
    • https://static.usrfiles.com/ugd/bb13a2_4fa58f2999884ff5910357c1c77ce2f7.pdf
    • https://static.usrfiles.com/ugd/b8c837_0f1665510cc943a4abd4f90de84a8551.pdf
    • https://cdn.shopify.com/s/files/1/0431/1282/4986/files/92829072418.pdf
    • https://cdn.shopify.com/s/files/1/0432/0113/4747/files/angularjs_2_interview_questions_tutorialspoint.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006316.bin
5c45b862a8a8cc4b6005a85a9d21152b865dec2f7847b54c372e383e3b2b5a15		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6316 5148 bytes
font_01_sfnt_off0000749e.bin
48630c5b0801113bb824ede3d6475be512eb5701192e4220c134208dca496a7c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x749E 12104 bytes
font_02_sfnt_off00009adb.bin
07ecde503da4517b8f20e35e4c6cab051d84b79abe310f3c2ada97187e7d04e7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9ADB 1852 bytes
font_03_sfnt_off0000a3cd.bin
21dad9fe021122dee1c3c74ab67bde358a3ff5cfc617024203dcb88c49475660		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA3CD 10632 bytes

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