PDF malware analysis — malicious · f80a0d12c683bd32

MALICIOUS

PDF

33.6 KB Created: 2020-10-21 08:20:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: e4def8ef43d965d55b48156546f891e4 SHA-1: a56e3ff08c11d9303a9c5fa3d1ce6dfa1980f4dc SHA-256: f80a0d12c683bd326fc584569f3b2eef1e63b2422518c8fc87b4a25bf34853ee

152 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, indicating an attempt to lead the user to malicious content. The document body also contains numerous links, many pointing to benign Shopify and S3 resources, but the primary malicious indicator is the redirector URL. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

Nyx PDF Classifier malicious score 0.9988

Heuristics 3

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.
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://gettraff.ru/strik?keyword=english+books+for+beginners
- https://cdn-cms.f-static.net/uploads/4368985/normal_5f8f83af31591.pdf
- https://cdn-cms.f-static.net/uploads/4369907/normal_5f8d99e12b43f.pdf
- https://cdn-cms.f-static.net/uploads/4368245/normal_5f890968191c7.pdf
- https://cdn-cms.f-static.net/uploads/4367622/normal_5f8cfad89370d.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0503/0051/8582/files/fresher_manual_testing_jobs_in_hyderabad.pdf
- https://cdn.shopify.com/s/files/1/0484/5466/4342/files/vudegiz.pdf
- https://cdn.shopify.com/s/files/1/0433/3263/2730/files/raputagej.pdf
- https://cdn.shopify.com/s/files/1/0497/7888/4759/files/orchard_toys_yo_ho_ho_game_instructions.pdf
- https://s3.amazonaws.com/pazifetanegapu/wuzupuna.pdf
- https://s3.amazonaws.com/mijedusovineti/inter_1st_year_english_book.pdf
- https://s3.amazonaws.com/sugaguxagu/vomopudemewaku.pdf
- https://s3.amazonaws.com/felasorarabipis/libros_de_alfred_adler_gratis.pdf
- https://s3.amazonaws.com/kavitokolezub/88937134227.pdf
- https://uploads.strikinglycdn.com/files/4366684e-0de5-453a-8090-1edb55fcaf9a/nonivalenemuralepajufufik.pdf
- https://uploads.strikinglycdn.com/files/ed6d8374-c3e2-4adb-9d66-202f45034120/38291744560.pdf
- https://uploads.strikinglycdn.com/files/51ba0120-a8fd-4c56-a1b7-f6630799289f/putonasowegejewelit.pdf
- https://cdn.shopify.com/s/files/1/0492/4404/5468/files/tafoje.pdf
- https://cdn.shopify.com/s/files/1/0501/5846/9281/files/fabuvudawoxaniradegan.pdf
- https://cdn.shopify.com/s/files/1/0496/0108/5607/files/ibico_binding_machine_instruction_manual.pdf
- https://uploads.strikinglycdn.com/files/9b745f19-1d4e-4367-8049-160583706a72/12589233036.pdf
- https://uploads.strikinglycdn.com/files/7c4d1569-eff3-49e8-ab43-8a1ce0aef752/pibonomoweviwagem.pdf
- https://uploads.strikinglycdn.com/files/cc43139d-c056-4100-a9f8-c26296411a65/78685985529.pdf
- http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00007810.bin` `945bb7ec287e7c0aaef215a09b0cf1a14a05c19496e61e143f0c9e36121104d7`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7810	4980 bytes

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