PDF malware analysis — malicious · 4d4cd563b1db493d

MALICIOUS

PDF

53.6 KB Created: 2020-10-26 01:23:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 196a314ce8ed49ebae99f3f19df44a17 SHA-1: 500c1bf4c86b5523279a022a7cf8e12571292f46 SHA-256: 4d4cd563b1db493d440b226ed89f4815641cdbdffaea1ee77ab894ef4c6ee708

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded links, with one heuristic specifically identifying a link to a known malicious redirector. The document body, though heavily obfuscated, contains text related to a transistor datasheet and a URL that matches the redirector. The presence of a large number of external PDF links suggests a link farm or SEO poisoning attempt, likely to obscure the malicious intent. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

Nyx PDF Classifier malicious score 0.9999

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://cctraff.ru/aws?keyword=transistor+2n2222+datasheet+pdf
- https://suzokixuvajix.weebly.com/uploads/1/3/0/7/130776208/8614398.pdf
- https://lupolaluxu.weebly.com/uploads/1/3/2/6/132681144/533ae5baa0f3c.pdf
- https://dajifavetesa.weebly.com/uploads/1/3/4/2/134234726/xonaja-jasin-gusoteviz-rubenatifitukom.pdf
- https://jiwepurojal.weebly.com/uploads/1/3/0/7/130775762/2697285.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- http://www.opentle.org
- http://www.daltonmaag.com/
- https://cdn.shopify.com/s/files/1/0482/9937/6802/files/les_gommes_alain_robbe_grillet.pdf
- https://cdn.shopify.com/s/files/1/0502/1155/3473/files/semiologia_porto_livro.pdf
- https://cdn.shopify.com/s/files/1/0478/0952/7967/files/business_intelligence_development_studio_bids_2008_download.pdf
- https://cdn.shopify.com/s/files/1/0431/7777/1164/files/kedagabanaxirojijebuxiki.pdf
- https://cdn.shopify.com/s/files/1/0483/6727/2087/files/kufap.pdf
- https://uploads.strikinglycdn.com/files/95b0a42e-8bb5-4aff-8fe9-eaf3ce56b146/8490761106.pdf
- https://uploads.strikinglycdn.com/files/ee135bc3-23ab-422a-b6b8-eb77f86c0a9b/kan_ik_op_een_50cc_scooter_rijden_zo.pdf
- https://uploads.strikinglycdn.com/files/0a934f91-4dd4-4480-9d8d-78ee00047dab/gta_5_ceo_vehicle_cargo_guide.pdf
- https://uploads.strikinglycdn.com/files/6e8cee1b-fc2d-4540-b612-439c6436595b/68459783985.pdf
- https://uploads.strikinglycdn.com/files/4ca0f438-01fa-4ef3-b81d-f1845c8caab2/jigalamezikonivimaku.pdf
- https://uploads.strikinglycdn.com/files/f0bee05b-73ec-46bf-9f0a-f944bbbda10c/kawuwesubadukezudiz.pdf
- https://uploads.strikinglycdn.com/files/33fbc702-995b-420a-ba07-cb4c13f49ec6/41751945804.pdf
- https://uploads.strikinglycdn.com/files/59158419-468e-42b6-a494-4631971b87e9/processes_systems_and_information_an_introduction_to_mis_ebook.pdf
- https://uploads.strikinglycdn.com/files/e060ebe1-782e-47f1-8ddf-6ba89921e659/mimeviku.pdf
- https://uploads.strikinglycdn.com/files/d824e720-da02-4be7-8d68-cf312a742e04/happier_tal_ben_shahar_free_down.pdf
- https://uploads.strikinglycdn.com/files/0dffe79f-4be6-4661-a3d5-cd409f97b1d6/77302004811.pdf
- https://uploads.strikinglycdn.com/files/536ade86-38ac-4f86-8caf-a6b770700d21/35826284396.pdf
- https://uploads.strikinglycdn.com/files/c9802f91-2e38-4878-b7c1-be1703772aa9/missed_abortion.pdf
- https://uploads.strikinglycdn.com/files/f2054884-83e2-44b0-9444-92ccf64f37b7/66343353636.pdf
- https://uploads.strikinglycdn.com/files/aed10ab6-1b88-4e86-a7eb-c4cf1b3a8e1f/83032856591.pdf
- https://uploads.strikinglycdn.com/files/0e7f32ed-9371-4c89-b05f-cbbd2228480e/memorial_service_invitation_template.pdf
- 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/
- http://scripts.sil.org/OFL
- http://www.gnu.org/licenses/gpl.html

Extracted artifacts 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000728d.bin` `02438777f66551c5cac4a50adb2ecd8b51067272ceb68afab85fd49345945770`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x728D	4968 bytes
`font_01_sfnt_off00008351.bin` `d8e4b7f44dfb66ea49c7f1cefd345a391fade3fb548cc17de4cdbf151663dabd`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8351	6068 bytes
`font_02_sfnt_off00009302.bin` `9007a92b00996c68ee4bd750f836d121789c3f3a8bdab628d930f6e3c269f7f0`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9302	11796 bytes
`font_03_sfnt_off0000ba02.bin` `9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xBA02	4324 bytes

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