Malicious PDF — malware analysis report

Static analysis result for SHA-256 7fc0bb414eab0410…

MALICIOUS

PDF

49.9 KB Created: 2020-10-16 01:28:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 7e3a8511ec2e0aed59435d3450cd6286 SHA-1: 398491ff8ac83dcb966090bd362a8b3b818f7b5e SHA-256: 7fc0bb414eab04103d77daa6ef2c57ed087ac449444402be78e081f48d02d42f
204 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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=segunda+guerra+mundial+completa+pdf In PDF document text
    • https://site-1039922.mozfiles.com/files/1039922/69455059632.pdfIn PDF document text
    • https://site-1048206.mozfiles.com/files/1048206/gepafafuxitomudu.pdfIn PDF document text
    • https://site-1044496.mozfiles.com/files/1044496/73829840198.pdfIn PDF document text
    • https://site-1048573.mozfiles.com/files/1048573/bogumozu.pdfIn PDF document text
    • https://site-1040998.mozfiles.com/files/1040998/11642113141.pdfIn PDF document text
    • https://site-1039503.mozfiles.com/files/1039503/63820996235.pdfIn PDF document text
    • https://site-1039800.mozfiles.com/files/1039800/felowanekugeminom.pdfIn PDF document text
    • https://site-1037163.mozfiles.com/files/1037163/magimodaxomitumi.pdfIn PDF document text
    • https://gapefupekud.weebly.com/uploads/1/3/1/8/131871489/ededfa7818bb07c.pdfIn PDF document text
    • https://wetuxabo.weebly.com/uploads/1/3/0/8/130873937/f4661c995d73d16.pdfIn PDF document text
    • https://zulatikuwa.weebly.com/uploads/1/3/0/7/130776211/razisepijelus.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/d32a2c33-8074-48f0-ba4b-52892252229f/gosuronogozar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4996d2bd-0ded-4b47-924b-fcb264d6807d/91445750372.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/357fcbeb-7e4d-428d-9d0e-7dea632d0f4e/jesepoxapezokefusame.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d179e0fa-9470-4869-8f09-2213eb682af4/26331796573.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4a621a45-869c-4af1-8d7d-330dda796848/sosunub.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3f911619-65df-4eee-98b1-f90cfa376b86/16240395817.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3bf5e21b-bff6-4605-b6d6-73da79fdf3f6/butapamajunudakezobore.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/9436/7126/files/humidifier_with_humidistat_for_grow_tent.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4615/1078/files/soul_seeker_six_knights_hack.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5913/5132/files/57534120189.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8114/7582/files/what_is_a_descriptive_phrase.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_off000082b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82B7 5400 bytes
SHA-256: 8ae0675d78e95ed71a8caae1058efb87b30fde4cb7c320bf418a6bdb40830580
font_01_sfnt_off000094fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x94FB 11312 bytes
SHA-256: 7826ff08eef36237824c27780e08da0cf2d90c7e7c9c1d35a5d51d0d32c38e2e