Malicious PDF — malware analysis report

Static analysis result for SHA-256 08658a51256ca479…

MALICIOUS

PDF

52.5 KB Created: 2020-10-30 23:03:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: a35585393d00fb9fec121da3d83dee98 SHA-1: bf70082a9bb1888d32163b27051eebb932b5f35f SHA-256: 08658a51256ca47912c530bee983182704f957ea5d7777f16d29c1e87b64cd99
194 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://gettraff.ru/aws?keyword=everstart+jump+starter+hp250+owners+manual In PDF document text
    • https://cdn-cms.f-static.net/uploads/4383464/normal_5f99d2e373315.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381101/normal_5f995cf445a19.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422876/normal_5f9c74749c629.pdfIn PDF document text
    • https://jeponiruwapin.weebly.com/uploads/1/3/0/7/130776483/bumumobo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385014/normal_5f902c0fd9a5c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374364/normal_5f93d254efd14.pdfIn PDF document text
    • https://xijonezamo.weebly.com/uploads/1/3/1/4/131407630/3bc8cfc.pdfIn PDF document text
    • http://fontawesome.iohttp://fontawesome.io/license/In 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/1/0497/5824/0922/files/sms_bomber_0.91_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0592/6809/files/wobolebeso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0268/8660/2943/files/38467823448.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9050/0001/files/19480562312.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/3860/2902/files/negative_adjective_prefixes_exercises.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/7722/8462/files/gubejalizuluriwodixu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4361/8965/files/realidades_2_capitulo_1a_answers_page_9.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/4082/3203/files/dark_souls_3_dark_hand_build.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/6298/3331/files/lepezevazuwumekuzizijas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0726/1341/files/estudio_tecnico_libro.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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000854d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x854D 1872 bytes
SHA-256: 223568fc15723d408f00056d2cf6bf73ec0b5e81a44ab038b8d55cfaeb1c3c3d
font_01_sfnt_off00008e40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E40 5640 bytes
SHA-256: 73c24af5c575a1c772bb6375fab146743b386a96f745fc47b4e13ea9598c2cab
font_02_sfnt_off0000a166.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA166 10088 bytes
SHA-256: 6bdf596c08665971cc3fec74678ac097b7ff2e67a3453ed31531d998aa0d4407

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