Malicious PDF — malware analysis report

Static analysis result for SHA-256 505ba1143c832c12…

MALICIOUS

PDF

45.9 KB Created: 2020-10-17 10:53:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 53cfb64397b70767512c0c6d0f156472 SHA-1: f801805bbb532818c9f207255b4494a503ed6968 SHA-256: 505ba1143c832c12ee297798b0f61d8ac84cb194fdd727497bf33f7c05313f52
154 Risk Score

Malware Insights

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

The PDF contains a link disguised as a download for 'nba 2k20 mobile mod apk', which redirects to malicious infrastructure. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms this, and the PDF_SEO_LINK_FARM heuristic indicates a large number of outbound links, suggesting a link farm designed to distribute malicious content. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a phishing or malware distribution attempt.

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.me/123?keyword=nba+2k20+mobile+mod+apk In PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/da50c7e0ec8f483.pdfIn PDF document text
    • https://vafuzetok.weebly.com/uploads/1/3/2/7/132740798/begufirufajiruz_lanijevebop.pdfIn PDF document text
    • https://xazapadikud.weebly.com/uploads/1/3/1/8/131871762/1844859.pdfIn PDF document text
    • https://vupimolafi.weebly.com/uploads/1/3/1/3/131398504/pularawawa.pdfIn PDF document text
    • https://jasazifo.weebly.com/uploads/1/3/1/4/131437377/b19b0db3b81c95.pdfIn PDF document text
    • https://goduvozimaku.weebly.com/uploads/1/3/1/3/131380582/2623587.pdfIn PDF document text
    • https://jizonuwuko.weebly.com/uploads/1/3/0/8/130814311/wedit_bajojabo.pdfIn PDF document text
    • https://dimaxafazeza.weebly.com/uploads/1/3/1/4/131453031/8767144.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367301/normal_5f8a134b1a18d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366407/normal_5f87562a722dd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368487/normal_5f8a96bca11a2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369520/normal_5f889de92fa53.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372985/normal_5f889a70d7576.pdfIn PDF document text
    • https://fijojonibiw.weebly.com/uploads/1/3/2/6/132681787/8279037.pdfIn PDF document text
    • https://totapige.weebly.com/uploads/1/3/1/4/131483287/sefoteveme_pepejovig_dosav.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6559/8364/files/piper_cherokee_140_for_sale_south_africa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4926/0968/files/zujadonibovipagenus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8264/5665/files/gisazolomifemenozoso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6385/2708/files/15525057775.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/7065/5418/files/bugagufabifunojofu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/9153/5018/files/tango_live_mod_chinese_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/8280/1312/files/gonoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5161/3351/files/11549057251.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000743b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x743B 5276 bytes
SHA-256: 373c8fd1458225ea6a01051a9e855ca0fd355035d6175c9782ffbabb2bebf36a
font_01_sfnt_off0000861c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x861C 10648 bytes
SHA-256: 2589df9a02c8c54c39e0894f5c051173416ae652c0855b5d6c32e712570819bc

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