Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea0b36a88fed31a4…

MALICIOUS

PDF

47.5 KB Created: 2020-10-15 13:50:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 689eaa27b255c81d068f3b5dbc3ade43 SHA-1: e65697cdc1326b1060122ac0e874a32b7cf6f4c0 SHA-256: ea0b36a88fed31a4018c558fe906ae043180f59d7c265f1e097cf498a304045f
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://ggtraff.ru/123?keyword=olympus+pen+mini+e-pm1+manual In PDF document text
    • https://site-1039573.mozfiles.com/files/1039573/16345623098.pdfIn PDF document text
    • https://site-1048168.mozfiles.com/files/1048168/gogamapetapupipes.pdfIn PDF document text
    • https://site-1040503.mozfiles.com/files/1040503/39541314450.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367277/normal_5f87facae5f0c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365634/normal_5f86fc8e06e99.pdfIn PDF document text
    • https://vuxozajuje.weebly.com/uploads/1/3/1/3/131379873/kinufijozulof.pdfIn PDF document text
    • https://wekubuzebebam.weebly.com/uploads/1/3/0/7/130739705/a785a026bb.pdfIn PDF document text
    • https://zesopupejilit.weebly.com/uploads/1/3/0/7/130738861/botisipizuz_supixikikijowa_kabexodonu.pdfIn PDF document text
    • https://walijogopabo.weebly.com/uploads/1/3/0/7/130776167/gegakunagakamet-wipumidujo.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/47080e5e-3219-42bd-9a23-8cb989fb4085/93540528305.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5555/3432/files/iron_kingdoms_fillable_character_sheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0478/3502/1471/files/kijamelajujobibejutowu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0478/7703/0054/files/wegabuzopun.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/863bf323-2351-491f-9ee5-2a3d72c4b44b/88790404960.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4c4f1f29-0517-4123-b90a-c7cc1fc05827/sosokirexafalasopavefof.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d3765281-836f-4bcb-8255-2c0df94c27bf/dilavagexudelomuworonenu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/70a65c9a-6f6f-4bee-ac23-4e9c04e6f44c/mofikakidin.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_off00006d24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D24 5084 bytes
SHA-256: 546a123b8ecd85844ebb42141608451e5ca1545b97865f0b0412b6c8d152300b
font_01_sfnt_off00007e70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E70 15516 bytes
SHA-256: 05b2d97ce518412e1103d9913b9f28de0a4a68a77a9586b915041dab3249e9a1

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