Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a373716c996e8f8…

MALICIOUS

PDF

47.1 KB Created: 2020-10-28 17:10:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 0c3edb4ff857ae4fc1a9bc34e9f6a02d SHA-1: fa0d15022efc4c2aca2af881be9533173107982b SHA-256: 9a373716c996e8f8b134ba7b0450924bcb8cf8d925ed7b3e99183d915d2517ee
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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.club/pify?keyword=mangatoon+apk+mod In PDF document text
    • https://siregudak.weebly.com/uploads/1/3/0/7/130738759/loxovijevifam.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426967/normal_5f98581c1de8c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408348/normal_5f96658e28b77.pdfIn PDF document text
    • https://boguvetasitob.weebly.com/uploads/1/3/1/3/131380850/degudipege_tarisomuzix_favij_sixelikematigab.pdfIn PDF document text
    • https://folanejo.weebly.com/uploads/1/3/0/7/130776558/xajevobedizide.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389370/normal_5f904bd623929.pdfIn PDF document text
    • https://zagukosi.weebly.com/uploads/1/3/4/3/134314994/limasejaxomo_nafexotuv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382190/normal_5f9084bddf1e3.pdfIn PDF document text
    • https://gilolubirej.weebly.com/uploads/1/3/4/3/134309297/sijijid.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367667/normal_5f891170477c8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373508/normal_5f8bf931db6d8.pdfIn PDF document text
    • https://pepotoxuxomupav.weebly.com/uploads/1/3/1/4/131483830/1d256cab909.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417827/normal_5f9579be09c24.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386591/normal_5f982e189c23b.pdfIn PDF document text
    • https://ximinelinax.weebly.com/uploads/1/3/4/3/134313791/soxerab_bedosejipo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366661/normal_5f986fa631afb.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/1/0480/5269/9300/files/ralefixa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5e90746a-7664-4fc2-bd7a-6e85746996d7/3461992072.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/09c9fc57-0ec3-4b5d-96cd-b2efdf06cffd/vuwonuzovofomekikopojoniv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8081/9881/files/android_intent_class_parameters.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1f2e2ede-b593-40f0-bb9c-650982b9f274/lego_mindstorm_nxt_instruction_manua.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/3888/9891/files/1055344724.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5762cdfa-a33e-4200-8786-0b40fccab7d1/89070448653.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0488/1485/0213/files/carinthia_jacket_size_guide.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_off00007b42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B42 5044 bytes
SHA-256: 2272c51512cf3ba5d073bc83cdef3b15be99a28adbaee261ae13cebaeeb52c63
font_01_sfnt_off00008c6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C6D 10052 bytes
SHA-256: 91c79029913ec48a3d8293b8dc1f25e2d3e29e27ce7ac6b305cd33bf28beb07a

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