Malicious PDF — malware analysis report

Static analysis result for SHA-256 ef713bbc3a3495c4…

MALICIOUS

PDF

37.4 KB Created: 2020-09-16 21:19:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d968af15233b918c212a96578cb6d1ee SHA-1: 3fa1fd0f32ddefc53756aabbd2134346775be427 SHA-256: ef713bbc3a3495c4e6377263b9565c95a02429cd33c7c81b05d5b19897e5f6a2
152 Risk Score

Malware Insights

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

This PDF file contains a significant number of embedded links, many pointing to Shopify domains hosting other PDFs, suggesting a link farm or SEO poisoning tactic. One critical heuristic identified a direct link to a known malicious redirector, `https://ttraff.club/wix?keyword=pinata+hunter+4+hacked+apk`, which is presented in the document body. This indicates a social engineering attempt to lure users to malicious content, likely for further exploitation or malware delivery.

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.club/wix?keyword=pinata+hunter+4+hacked+apk
    • https://cdn.shopify.com/s/files/1/0431/8806/0321/files/kejofimuto.pdf
    • https://cdn.shopify.com/s/files/1/0433/3328/8088/files/vue_directives_cheat_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0434/5217/0406/files/free_amharic_children_s_books.pdf
    • https://cdn.shopify.com/s/files/1/0435/4703/3752/files/rutiritoxexofaripadububi.pdf
    • https://cdn.shopify.com/s/files/1/0434/0419/8038/files/31615357103.pdf
    • https://cdn.shopify.com/s/files/1/0434/0436/1895/files/76363488498.pdf
    • https://cdn.shopify.com/s/files/1/0436/8026/8438/files/ligne_121_guide_impot.pdf
    • https://cdn.shopify.com/s/files/1/0428/8711/9007/files/21898996286.pdf
    • https://cdn.shopify.com/s/files/1/0437/8161/9861/files/livro_ansiedade_3_cimes.pdf
    • https://cdn.shopify.com/s/files/1/0432/1479/9012/files/97621751972.pdf
    • https://cdn.shopify.com/s/files/1/0434/8120/2854/files/adobe_camera_raw_dng_converter.pdf
    • https://cdn.shopify.com/s/files/1/0434/5207/2086/files/alexandre_o_grande_filme_completo_dublado.pdf
    • https://cdn.shopify.com/s/files/1/0434/1510/9797/files/fesafedas.pdf
    • https://cdn.shopify.com/s/files/1/0431/8786/3715/files/manual_de_seguridad_e_higiene_industrial_senati.pdf
    • https://160c12b9-7b03-4c23-aba5-7eb6856ab1aa.filesusr.com/ugd/f68081_c86d5d4460d3445ea165f7f8c13a27ec.pdf?index=true
    • https://16f8c789-952c-4bac-824e-68d45a0dce50.filesusr.com/ugd/17159d_850164d2f34042729fda1f5405b868c4.pdf?index=true
    • https://2c51bfe6-e022-4232-8b9c-a9007c82f00f.filesusr.com/ugd/f6336d_f86686e0cf4744e6aae362373611332e.pdf?index=true
    • https://a53bba19-dc18-4211-8e11-dbe2f7bd4e9f.filesusr.com/ugd/dad7b5_923484be7e96413ca0902e82266298cd.pdf?index=true
    • 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_off000054cb.bin
c8a63ae74e8a3b698974a598d1228278d1964060d107ef2bcf9b6f993fcdaa76		 pdf-font-stream PDF embedded font (sfnt) at offset 0x54CB 5104 bytes
font_01_sfnt_off0000662c.bin
10d9d987e0ff8462bc3d0ccea223f30f72a60b1012e64cf731adff9a167e89d6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x662C 10264 bytes

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