Malicious PDF — malware analysis report

Static analysis result for SHA-256 34af4421be02eed8…

MALICIOUS

PDF

52.0 KB Created: 2020-10-16 02:23:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: d9a510cb9c081313b043b3b141bc70c7 SHA-1: a419605713cca4db2f7c874fd6315038afd5a86b SHA-256: 34af4421be02eed8db1d9f021bea6d2c13a7ddde94bc9f85a4fc51e57697f13e
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=poverty+guidelines+for+medicaid+florida In PDF document text
    • https://kafasomawupi.weebly.com/uploads/1/3/0/7/130775431/futafonulaxa.pdfIn PDF document text
    • https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/7885719.pdfIn PDF document text
    • https://site-1038532.mozfiles.com/files/1038532/tigumosufuw.pdfIn PDF document text
    • https://site-1040248.mozfiles.com/files/1040248/4538887728.pdfIn PDF document text
    • https://site-1043035.mozfiles.com/files/1043035/bemata.pdfIn PDF document text
    • https://site-1037276.mozfiles.com/files/1037276/10851717135.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/1/0266/9042/0914/files/87019381433.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/7806/7393/files/nj_path_train_map.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/1508/5473/files/launcher_apk_download_apkpure.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/54d73ac3-ba35-4dc9-bd9c-332b66b19bb5/97540433470.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e8218a6f-c484-4a0e-aee8-3210c35d15e5/gofasegikegirepenen.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5f2cf9e7-cd91-4894-a9d4-9f21fd0efd92/73044589809.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/811cdf86-1a1c-43f0-bc72-52f6e2aaa65d/72775223664.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dd3187e3-b0d1-4c7e-96d4-5735d38ff23a/12473458167.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/097e142f-268c-472a-ab17-eca8a69c5213/41713214407.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ce98f6e6-ab36-4a70-9530-35c29e87dab2/femizo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0e2dd8ee-ccc7-4152-a816-e86191881d4b/dafajopolanoduzadabagive.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2094/9403/files/maytag_maxima_error_codes_f01_e02.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/3522/6023/files/brain_evolution_system.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/0467/3187/files/steve_nison_candlestick_course.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/0690/1405/files/gwinnett_county_warrants_phone_number.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_off00008dd1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DD1 5504 bytes
SHA-256: 0e8c6430a312e9969e5d446b58bce08e467856fe4f12743d87e4ff9e50e03049
font_01_sfnt_off0000a080.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA080 10076 bytes
SHA-256: bfd7e75979511db6b8c1764952d2b986039e1a2edcc401ecd5435ca7ec2cb59a

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