PDF malware analysis — malicious · 9d322c53663055c9

MALICIOUS

PDF

47.3 KB Created: 2020-10-16 05:30:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23

MD5: 21fb2408436b3f533a73975dd8d684ee SHA-1: 2c35e689bd04f3dd8f1c6630d8c4bc6842dfba73 SHA-256: 9d322c53663055c9106e08265e197833b8343a6e2b6673cf61e8f50e1b13b47a

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded links, many of which point to redirectors and other PDF files hosted on Weebly. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' indicates that at least one URL leads to known malicious infrastructure. The presence of a large number of external links suggests a link farm or a phishing attempt to direct users to potentially harmful content. No scripts were extracted, but the document body contains URLs that are also listed in the heuristics.

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.link/pify?keyword=miui+notes+apk+download In PDF document text
- https://xazapadikud.weebly.com/uploads/1/3/1/8/131871762/c25ed073a.pdfIn PDF document text
- https://zoxaminajoge.weebly.com/uploads/1/3/1/6/131637873/rebakomexusiso_zemagelarew_xituvuf.pdfIn PDF document text
- https://mogilifus.weebly.com/uploads/1/3/0/7/130739831/7805117.pdfIn PDF document text
- https://sesuwulot.weebly.com/uploads/1/3/1/4/131438847/kasedabuzoli-givaraloga-rewolilopel-xavimaninevobu.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4365642/normal_5f88c5341d26f.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366961/normal_5f88be0713f41.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4368758/normal_5f88c6a4a56f7.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4370785/normal_5f88c962e3301.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4365570/normal_5f88dd01b1700.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366309/normal_5f88442aeb3e9.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4368770/normal_5f8890145ff8d.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366041/normal_5f88cd3aaa156.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4365560/normal_5f88c56e8848e.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.daltonmaag.com/In PDF document text
- https://cdn.shopify.com/s/files/1/0494/0365/8407/files/86101156233.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0497/1252/9587/files/gumoji.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/7922/8837/files/34905150624.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/2492/3298/files/drug_test_kits_cvs.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0496/1543/7987/files/91822991496.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0266/9487/7379/files/suzazusarudike.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/6454/8762/files/11155830280.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0482/9924/5723/files/uber_malformed_request_line.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0497/1977/1297/files/doubly_linked_list_c_delete_node.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/6132/1634/files/blues_run_the_game_chordpro_or_tab.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/8999/3621/files/93866514650.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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00006bf9.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6BF9	4900 bytes
SHA-256: `74b3c8f4b7fa01c297cd024b9e1cd85083b18054fb49559f810a1c97e400d1e6`
`font_01_sfnt_off00007ccc.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7CCC	10808 bytes
SHA-256: `d3571d4293e46c04d6a1806fa2e6c3c752073d515720d8e4e4beec42c0242f0e`
`font_02_sfnt_off0000a196.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA196	4324 bytes
SHA-256: `d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378`

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