Malicious PDF — malware analysis report

Static analysis result for SHA-256 17cd7ce8909b0b99…

MALICIOUS

PDF

44.3 KB Created: 2020-10-15 23:07:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 4477764acd8dd882c6ac1ee819aca4f9 SHA-1: 52021d8e58eb31b64a8c29423d85737281a5e3ae SHA-256: 17cd7ce8909b0b99bfc4730e01ddb3aaeb297f7252d91e62a56a30d5ab2b2a09
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document contains a link farm designed to redirect users to external sites, one of which is identified as malicious infrastructure. The document body text explicitly mentions 'Pinball 3d apk download', suggesting a lure for users seeking software. The presence of numerous links to disposable hosting services and a known redirector indicates a campaign to drive traffic to potentially harmful content.

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://ggtraff.ru/123?keyword=pinball+3d+apk+download In PDF document text
    • https://wepeweguwerixum.weebly.com/uploads/1/3/1/8/131856135/8378594.pdfIn PDF document text
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/kedoxezezaj-temolej-zunemalavorun-mutelokowomimi.pdfIn PDF document text
    • https://mamexobupelo.weebly.com/uploads/1/3/1/3/131383482/4421359.pdfIn PDF document text
    • https://site-1039000.mozfiles.com/files/1039000/68345450606.pdfIn PDF document text
    • https://site-1038744.mozfiles.com/files/1038744/sivolum.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365638/normal_5f874d4b8ea8f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367644/normal_5f879bd240c31.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365638/normal_5f881b45f1bab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370087/normal_5f87fccdf11a9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366050/normal_5f87421f8b532.pdfIn PDF document text
    • https://xonimitofowe.weebly.com/uploads/1/3/2/6/132682232/a9ba43d719.pdfIn PDF document text
    • https://juragubiv.weebly.com/uploads/1/3/0/8/130874328/lafoza.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/jolon_koxuzozudanik_makilitinami.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/09db29ff-e969-4839-a45f-68279acbdf3f/rosezafodod.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/22fbf4b3-dbb0-4e61-8149-0e488038f4c5/67463267075.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a8a69723-986e-4499-b902-826175ecb595/dodakajik.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/61b4210e-2906-42bd-a8b2-6e270e6097e3/87597138932.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/5004/8921/files/morro_bay_water_polo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9926/8003/files/private_sub_worksheet_activate_not_working.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/4165/5454/files/algebra_2_graphing_exponential_functions_answers.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_off00006fb5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FB5 5140 bytes
SHA-256: eaae842ba94626a1c59a2faadd804d93d60c0811c9b02eaf2c096189ff4ea706
font_01_sfnt_off00008146.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8146 10084 bytes
SHA-256: c61f1c95ce5e53c22625e764a575ea4e7185c4c089a93191f7aa9851bfc07c34