Malicious PDF — malware analysis report

Static analysis result for SHA-256 7000a6129df455d5…

MALICIOUS

PDF

43.1 KB Created: 2020-10-26 06:06:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 47c6b5575c48d0b14de52c63ee174eef SHA-1: 71f4ccb6ea1e2b56801f4c67ad2fdbf02c1c63bd SHA-256: 7000a6129df455d5ddccaddf71389f463b5a52e35e7410c553206a3d9923c5fb
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a significant number of embedded links, with one heuristic specifically identifying a link to known malicious redirector infrastructure. The presence of a large link farm suggests an attempt to distribute malicious content or lead users to phishing sites. No scripts were extracted, but the structure and embedded links strongly indicate a malicious intent.

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://cctraff.ru/aws?keyword=%25D0%25B1%25D1%2580%25D0%25B0%25D1%2582%25D1%2581%25D1%2582%25D0%25B2%25D0%25BE%25D1%2582%25D0%25BE+%25D0%25BD%25D0%25B0+%25D1%2587%25D0%25B5%25D1%2580%25D0%25BD%25D0%25B8%25D1%258F+%25D0%25BA%25D0%25B8%25D0%25BD%25D0%25B6%25D0%25B0%25D0%25BB+%25D0%25BA%25D0%25BD%25D0%25B8%25D0%25B3%25D0%25B0+14+pdf In PDF document text
    • https://bujezabuzi.weebly.com/uploads/1/3/4/3/134310034/torunesoxizoz.pdfIn PDF document text
    • https://buveziketi.weebly.com/uploads/1/3/1/3/131398526/xiluzawiwol_zubawabanuma_fupefozebiwo_kesuta.pdfIn PDF document text
    • https://damijuvik.weebly.com/uploads/1/3/1/3/131381376/xofasimuvirit.pdfIn PDF document text
    • https://kafaziwe.weebly.com/uploads/1/3/1/0/131070109/vedom_rijuxav_wopenesagik.pdfIn PDF document text
    • https://goduvozimaku.weebly.com/uploads/1/3/1/3/131380582/redimisobafu.pdfIn PDF document text
    • https://funebaxap.weebly.com/uploads/1/3/4/3/134399245/6740665.pdfIn PDF document text
    • https://bijifejutumaxob.weebly.com/uploads/1/3/1/3/131381781/38ada888.pdfIn PDF document text
    • https://ligofaxudatejot.weebly.com/uploads/1/3/0/7/130739538/8957825.pdfIn PDF document text
    • https://lekolusogi.weebly.com/uploads/1/3/4/3/134365603/2620405.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/1/0434/2536/6165/files/36698849646.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0494/9642/4607/files/pidaxat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/2187/9461/files/zetaximifinefarazimu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/6093/1991/files/spaceflight_simulator_mod_apk_latest.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/9745/5295/files/mawisumuwoxaxuwadanaxatof.pdfIn PDF document text
    • https://s3.amazonaws.com/bewibiwat/molecular_genetics_full_book.pdfIn PDF document text
    • https://s3.amazonaws.com/janodojivi/nephritis_lupus.pdfIn PDF document text
    • https://s3.amazonaws.com/memul/956185696.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ed23fc2f-8d57-4e33-891f-53546cfd4483/3156528281.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/703033ba-867b-4634-814d-d0bccf530213/xxx_video_player.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_off00005bbe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BBE 6212 bytes
SHA-256: 63942d34cd64a1883b7d3b5dc10053f8b7b50b3c5b52486a7a7f0643df4bdfb4
font_01_sfnt_off00007015.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7015 14244 bytes
SHA-256: 7c2223b32455971e4f475141b3106f1f2cf7b9f75cce9e7bc962f92476051414

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