PDF malware analysis — malicious · 4a749afd608071eb

MALICIOUS

PDF

41.4 KB Created: 2020-10-26 06:06:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 3c504246701d6f14571d40ebed6948c6 SHA-1: 33303ca0fd1dd5815ad96fc80de0a56ebb0579d6 SHA-256: 4a749afd608071ebd29a33163b515633775de2c43f622f470dc2d5e011e8138d

152 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains embedded links, one of which points to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text related to 'Bpsc admit card pdf' and a URL that appears to be a lure. The presence of numerous external PDF links, many pointing to benign AWS S3 buckets, suggests a link farm designed to obscure the malicious redirector.

Machine Learning

Nyx PDF Classifier malicious score 0.9992

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://cctraff.ru/aws?keyword=bpsc+admit+card+pdf
- https://s3.amazonaws.com/fibesezati/79080739942.pdf
- https://s3.amazonaws.com/laradusa/36868525934.pdf
- https://s3.amazonaws.com/henghuili-files2/17385525469.pdf
- https://s3.amazonaws.com/viboxikuz/bronconeumonia_etiologia.pdf
- https://s3.amazonaws.com/petuzutemixuvod/punjab_textbook_board_mathematics_10th_class.pdf
- https://uploads.strikinglycdn.com/files/00364573-8269-43b2-aaea-02d9a3cd8a8a/65947329458.pdf
- https://uploads.strikinglycdn.com/files/0583a422-e0aa-45af-a6a4-024b055852f7/83067273767.pdf
- https://uploads.strikinglycdn.com/files/c936ea3d-c4ed-4aba-a7c0-be1728088ae7/14909493080.pdf
- https://uploads.strikinglycdn.com/files/adf014cd-7056-4b62-a434-0940b85c4b58/advanced_r_programming_course.pdf
- https://s3.amazonaws.com/zidosozawok/nibutigazi.pdf
- https://s3.amazonaws.com/joterige/rawasi.pdf
- https://s3.amazonaws.com/robumuduluwise/christmas_sheet_music_piano_free.pdf
- https://s3.amazonaws.com/ginutu/nejepis.pdf
- https://uploads.strikinglycdn.com/files/cc972490-8da2-4026-86fc-50acfaf5ce96/54268499257.pdf
- https://uploads.strikinglycdn.com/files/e6c7408c-d045-4675-b3d6-66216fca3986/mexilinarufodafuvaxe.pdf
- https://uploads.strikinglycdn.com/files/cfb0e3f4-155d-4d46-8ba8-1e42343f0d29/1_4_7_10.pdf
- https://uploads.strikinglycdn.com/files/f083affa-c8a9-418a-9764-e29167945777/eragon_trn_b.pdf
- https://uploads.strikinglycdn.com/files/bba57ad0-a649-4f82-b473-fd0d393458b2/riwew.pdf
- https://cdn.shopify.com/s/files/1/0501/9035/2565/files/jobovozef.pdf
- https://cdn.shopify.com/s/files/1/0496/0400/1959/files/xikovedodigutorapokivod.pdf
- https://cdn.shopify.com/s/files/1/0476/5148/7910/files/4077256675.pdf

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