Malicious PDF — malware analysis report

Static analysis result for SHA-256 dda61fed35bdce24…

MALICIOUS

PDF

41.1 KB Created: 2020-10-26 22:42:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 70765a4bdd576fa06262e1a02d5939be SHA-1: e68846738d9e2a99edc8691de45c03e503ea60f2 SHA-256: dda61fed35bdce242ede53d94ce8a24f5187b8551276da272416e25e341142b6
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://ttraff.cc/pify?keyword=dead+man+zone In PDF document text
    • https://zesopupejilit.weebly.com/uploads/1/3/0/7/130738861/f1a75626ec5047c.pdfIn PDF document text
    • https://nowusunomotir.weebly.com/uploads/1/3/4/3/134314498/cbb9a659cbce7.pdfIn PDF document text
    • https://genamimiwovem.weebly.com/uploads/1/3/1/6/131636881/41f490e289.pdfIn PDF document text
    • https://pezopipowom.weebly.com/uploads/1/3/1/4/131406060/5525451.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365619/normal_5f8730c5b4cf6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370092/normal_5f8f8f62baa56.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383924/normal_5f920643a3ef8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371791/normal_5f8a67e8c7c7e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376612/normal_5f8b1b0090de7.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off000063e3.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off000063e3.bin)
    • https://uploads.strikinglycdn.com/files/6160503c-04b6-4013-adc2-9de33150cc4a/97300807175.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/30c36305-7694-483e-b1db-0c59cd41da65/watch_hannah_montana_movie_for_free_online.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a7300930-7315-4ce8-91b1-6c56296c5a4d/90396584824.pdfIn PDF document text
    • https://s3.amazonaws.com/gezejoputiwinu/donekuzemikusadogemi.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/phonology_definition.pdfIn PDF document text
    • https://s3.amazonaws.com/susopuzupure/porurofilirisa.pdfIn PDF document text
    • https://s3.amazonaws.com/wilugugo/24280951963.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/66376243403.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/chhattisgarh_river_map.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/0087/5173/files/78043815254.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0268/8863/4547/files/runolid.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 extracted file (font_00_sfnt_off000063e3.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000063e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63E3 4716 bytes
SHA-256: 6e508fb609971d06ddaa4c2e64cfe3dedc9385a3e245e482a087d02360f95b51
font_01_sfnt_off000073e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73E7 10636 bytes
SHA-256: f65c115337cf34d5a4d851a91d826c035e06c3d7b20ec088330154ea287a94f5