Malicious PDF — malware analysis report

Static analysis result for SHA-256 741aa6de8bacd61c…

MALICIOUS

PDF

48.9 KB Created: 2020-08-05 03:15:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 741c3f6d2d0ed4f6c39d84838c054ebd SHA-1: f1817c75943d170b9689787e90ddd9a7d08ceb44 SHA-256: 741aa6de8bacd61c29ee299aa99691cf4a4aa3ff840a9f67375114f479f98a86
154 Risk Score

Malware Insights

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

This PDF document contains numerous embedded links, many of which point to a link farm designed to mimic search engine results. One prominent URL, https://ttraff.ru/pify?keyword=religious+trust+deed+format+pdf+in+tamil, is identified as a malicious redirector. The document's structure and the presence of these links suggest an attempt to drive traffic to malicious infrastructure, likely for phishing or malware distribution.

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=religious+trust+deed+format+pdf+in+tamil
    • http://files.essenceofbeautydublin.com/uploads/1/3/1/6/131637057/9362341.pdf
    • http://felunofo.helenmccreery.com/uploads/1/3/1/3/131379803/wemivogel_fulaxati_xewipunoxum_diropuragop.pdf
    • http://files.shopkoco.com/uploads/1/3/0/7/130775498/4106519.pdf
    • http://files.ourladyofthebays.org/uploads/1/3/1/3/131381021/pabob.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/6750/6849/files/nukawomerimexuzi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zonamanasalusowalu.pdf
    • https://cdn.shopify.com/s/files/1/0432/7496/1059/files/adjoint_of_a_3x3_matrix.pdf
    • https://cdn.shopify.com/s/files/1/0431/8298/1281/files/83818146274.pdf
    • https://cdn.shopify.com/s/files/1/0428/8082/7558/files/kulovovuxisupivon.pdf
    • https://cdn.shopify.com/s/files/1/0431/5627/5362/files/make_chrome_full_screen.pdf
    • https://cdn.shopify.com/s/files/1/0431/4444/6118/files/jukidut.pdf
    • https://cdn.shopify.com/s/files/1/0434/5095/7974/files/8005575857.pdf
    • https://cdn.shopify.com/s/files/1/0430/4296/3613/files/suvodamawazowozotibeb.pdf
    • https://cdn.shopify.com/s/files/1/0430/4211/1650/files/67862760002.pdf
    • https://cdn.shopify.com/s/files/1/0437/1818/1013/files/lixugomu.pdf
    • https://cdn.shopify.com/s/files/1/0431/6820/2901/files/wiwemegunebuwazakukaze.pdf
    • https://cdn.shopify.com/s/files/1/0432/3049/4878/files/35891922537.pdf
    • https://cdn.shopify.com/s/files/1/0437/8591/2472/files/dorojunanofa.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_off000080f1.bin
9b4e7156e97ee87e08f7596a7a69665b62a90f71e87dfd2b0d4fbea916f2fdd4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x80F1 5368 bytes
font_01_sfnt_off0000931f.bin
06784fcf4c7c6953186e2f57a724c2b2073cf8ab0889af593dfc23f279fe057b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x931F 10260 bytes

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