Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab770af699e1f5b7…

MALICIOUS

PDF

41.1 KB Created: 2020-10-28 21:36:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: d32484ca190d8a1ff662fa9c9cc52ae7 SHA-1: 9d414cd6c3a591668b06e64c973b89238b9933b4 SHA-256: ab770af699e1f5b79bca69f67620a08d6515056b42391c13091fbbfe76f77436
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/123?keyword=miss+black+and+gold+pageant+talent In PDF document text
    • https://jawasolasazilem.weebly.com/uploads/1/3/1/3/131379174/wovexofek.pdfIn PDF document text
    • https://zelapagetuwuj.weebly.com/uploads/1/3/1/4/131406140/muruwuximusovid.pdfIn PDF document text
    • https://wemibevufiwoseb.weebly.com/uploads/1/3/0/8/130813314/2cf55e5aebceb.pdfIn PDF document text
    • https://pitimonajavigo.weebly.com/uploads/1/3/1/3/131383860/zurozagedimel-wenexajegubes-dulufine.pdfIn PDF document text
    • https://sisodiwitamusoz.weebly.com/uploads/1/3/2/6/132681746/jajogevudud_vapope.pdfIn PDF document text
    • https://numilobes.weebly.com/uploads/1/3/4/2/134235742/bc9d23f8e.pdfIn PDF document text
    • https://mozesewopizudal.weebly.com/uploads/1/3/4/3/134363743/nekesedumofewegal.pdfIn PDF document text
    • https://lotagixowila.weebly.com/uploads/1/3/1/1/131164100/wopebafojupizibes.pdfIn PDF document text
    • https://sanuvexugivi.weebly.com/uploads/1/3/1/6/131606490/2986215.pdfIn PDF document text
    • https://babikovinemixe.weebly.com/uploads/1/3/1/8/131856339/nuxigorozaxigufola.pdfIn PDF document text
    • https://sewobefavewekog.weebly.com/uploads/1/3/4/3/134367647/sawolawowekefu.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/1/0439/2547/1400/files/15716577729.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/6629/6986/files/talisman_reforge_guide_hypixel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0476/7481/8726/files/all_for_love_by_john_dryden.pdfIn PDF document text
    • https://s3.amazonaws.com/bevekizadoxuj/luzod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/4489/5392/files/commercial_hvac_inspection_checklist.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1651/8805/files/20578542408.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/2189/3271/files/machine_learning_algorithms_packt.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/6762/0541/files/raymond_chandler_the_little_sister.pdfIn PDF document text
    • https://s3.amazonaws.com/lunojol/wiselesepiwerozujorug.pdfIn PDF document text
    • https://s3.amazonaws.com/fedufiporara/cambridge_checkpoint_science_teacher_s_resource_book_3.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_off0000640b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x640B 5352 bytes
SHA-256: 3d76837059a604b8a36223845006503e9adb1107ef7b3664702078c9eea4d34a
font_01_sfnt_off0000765e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x765E 9552 bytes
SHA-256: 9125526465cbfb28d7bfc29200f34ed428127b11794fdc83675db47ca4624ebf