Malicious PDF — malware analysis report

Static analysis result for SHA-256 c4977e8b3bcb95f0…

MALICIOUS

PDF

42.4 KB Created: 2020-10-11 09:43:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 94de81f142b0272a2b896773bd4bb473 SHA-1: 7491b3ea384a68d11983928ddd97c9f72d13595b SHA-256: c4977e8b3bcb95f0ff6c6ce5bf45abbcb8e906fdbb5a10bf7c47112ad82d8004
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://ggtraff.ru/pify?keyword=80th+anniversary+monopoly In PDF document text
    • http://mamujoj.mobasseri.us/uploads/1/3/0/8/130873759/d6d82d50c4.pdfIn PDF document text
    • http://files.markheggaircraft.com/uploads/1/3/0/7/130739802/6950470.pdfIn PDF document text
    • http://files.thebonafideblonde.com/uploads/1/3/2/3/132303354/pijikulipefifepajat.pdfIn PDF document text
    • http://files.tutorvirginia.com/uploads/1/3/1/4/131483279/8f7a14746.pdfIn PDF document text
    • http://files.jianidesign.com/uploads/1/3/1/8/131871642/bce48.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/d29f2ef3-32ea-4e91-8a7a-a7ceecff695a/zipiguwikuvemoledotasuto.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/13b31f2f-a1c9-4d43-835b-d758737e48fe/52339737484.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a9ca9a81-b5ff-4aaa-b6ee-d14a33f0e658/lowosena.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f8553591-4aff-40e7-91d7-9e67b35c9c3f/ratazavor.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cbe0cb3a-7628-44f0-97b9-bed30a2f83d4/dikageneto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2661/9287/files/kicker_comp_vr_8_inch.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d9712aed-f1f6-458f-97c4-43d035e1e316/rodekosomikivipewidinor.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d1245d76-5883-4ee0-9631-6a18b6cfaa56/fofarirenetejejifatipuw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e48c6f31-eb96-4d77-a542-f03e40f821b8/536901147.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/87aa5cdd-665c-462b-9bbf-94320f776b74/91973308956.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/23ddc77a-69d0-46bf-ab2e-4a03b37c7f37/jakafidaziwenokevesaz.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
🗂 Part of campaign: markheggaircraft.com 3 samples

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_off000059de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x59DE 5252 bytes
SHA-256: 4bcaa638cc394ce8b897d706d1315eacfa140b9c96fa8df1793d6ce1e4075ea2
font_01_sfnt_off00006b7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B7B 10364 bytes
SHA-256: 1d759b4b37f9c0ef2466df4d0ecaba7fb49a7ce9aceed6409cc556911459cda9
font_02_sfnt_off00008eef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EEF 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

Open this report in the interactive analyzer, or submit your own file for analysis.