Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e0b15bd8f77c150…

MALICIOUS

PDF

40.0 KB Created: 2020-09-02 17:47:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e16721220d8c265fe53cb034522db6fa SHA-1: 19d8fc5a375e3613b468fdf2d0900a337b4d6f07 SHA-256: 3e0b15bd8f77c15020c8530d5bdd4ad9c321cc3aaba47c2845f56387ca3dc14f
154 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a redirector service. The primary heuristic firing indicates that the PDF links to known malicious redirector infrastructure. The document body contains the malicious URL, suggesting an attempt to trick the user into clicking it.

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=amist+super+rollover+form
    • https://cdn.shopify.com/s/files/1/0437/0356/6486/files/despues_de_las_clases_1b-_2_answers.pdf
    • https://cdn.shopify.com/s/files/1/0449/9865/6158/files/minutos_a_horas.pdf
    • https://cdn.shopify.com/s/files/1/0431/7020/1760/files/61936600465.pdf
    • https://cdn.shopify.com/s/files/1/0432/8855/9780/files/33904971159.pdf
    • https://cdn.shopify.com/s/files/1/0431/4251/2797/files/rgss202j._dll_not_found.pdf
    • https://static.usrfiles.com/ugd/83e584_cdbf1f32184045b28bb8296155af9266.pdf
    • https://static.usrfiles.com/ugd/55cc32_4cd047f259014c478b30ad5b86598827.pdf
    • https://static.usrfiles.com/ugd/086daf_554d523d387c4d3b9c019aa1d893773c.pdf
    • https://static.usrfiles.com/ugd/cf79db_3065fbcc0cd641879fa5912221699312.pdf
    • https://cdn.shopify.com/s/files/1/0438/7766/2875/files/lasuzutosurim.pdf
    • https://cdn.shopify.com/s/files/1/0435/0928/5024/files/96159318205.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000607a.bin
08c8a160a1b54f6d1c5266ed5db4681d53a7436223cce164eb98cc90dd899533		 pdf-font-stream PDF embedded font (sfnt) at offset 0x607A 4884 bytes
font_01_sfnt_off0000710d.bin
6d211a537ec02ae03eee3d44dfe0d40d2b50db74969e9d304f5c928af835c4e5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x710D 10184 bytes

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