Malicious PDF — malware analysis report

Static analysis result for SHA-256 97d528185f1fac61…

MALICIOUS

PDF

48.0 KB Created: 2020-10-31 14:20:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: a203348d2c35f536203743d6b551065d SHA-1: 15b64e5efd6ba93e29ec6b0002608191a7e9f931 SHA-256: 97d528185f1fac61b6583e8c8945a748034a2efa67c1dbabb6546526f0f8bce7
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.link/123?keyword=onq+system+wikipedia In PDF document text
    • https://nukawopuriw.weebly.com/uploads/1/3/4/3/134347541/0d601a5f763.pdfIn PDF document text
    • https://tumixivig.weebly.com/uploads/1/3/1/6/131636813/duxaxegidarexu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371246/normal_5f8b14ea1cc1a.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/xereromejiv-koxozirusoror-moxonujis.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366017/normal_5f963eba73b83.pdfIn PDF document text
    • https://rutedidatares.weebly.com/uploads/1/3/4/4/134490949/0a6f928.pdfIn PDF document text
    • https://luwamagol.weebly.com/uploads/1/3/4/3/134375262/1337693.pdfIn PDF document text
    • https://vozunutav.weebly.com/uploads/1/3/0/9/130969695/6949257.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00007b44.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00007b44.bin)
    • https://uploads.strikinglycdn.com/files/d31916da-e16a-48fa-bdd1-0ffd5eeba350/rokokexodukekozogelev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/0489/7691/files/ruzuwubijojoxu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/10e44cf3-0598-45ca-a27f-283a77694de4/dexipasose.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f6e79747-5b6c-4f4e-9902-853c6de6487b/tejodu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7376/3496/files/18920549554.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/67810e18-e44b-4fbc-9d7d-af627483adff/68409540238.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/efe436d5-c377-44de-a00e-fa16ed58d8c6/14593964691.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 extracted file (font_00_sfnt_off00007b44.bin)

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007b44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B44 5388 bytes
SHA-256: 4c6527c6fd49d66d2b99100a9a72879be63b95d616056c9a7f86b29909975bb0
font_01_sfnt_off00008d9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D9E 10952 bytes
SHA-256: 2f4d1f33ff65494d17b8050f7143513fb0b0f82e1d2f001646bb4b680ad03a66

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