Malicious PDF — malware analysis report

Static analysis result for SHA-256 e213148cb682c83c…

MALICIOUS

PDF

46.6 KB Created: 2020-10-21 04:12:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 7f3b8cab0bc2efd07a7022064697e2b2 SHA-1: b0294df19f7d1bc968b6eb6c9a4e4123d76012f9 SHA-256: e213148cb682c83c7d8bc664bb39bd81cc5b772014d70fce8853e620939f5882
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=ruins+of+undermountain+map+pdf In PDF document text
    • https://besiwalufeg.weebly.com/uploads/1/3/2/6/132696214/bararifozuv.pdfIn PDF document text
    • https://zesopupejilit.weebly.com/uploads/1/3/0/7/130738861/8291182.pdfIn PDF document text
    • https://wajiresejepo.weebly.com/uploads/1/3/0/7/130774962/1842240.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374522/normal_5f8a1360ca146.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384046/normal_5f8befefd4c2d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365638/normal_5f88836c58cdb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366324/normal_5f877e7b9779b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366045/normal_5f873d44a52eb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368962/normal_5f8bbb1b28fe3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374185/normal_5f8ea2a600503.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/mijedusovineti/86744175761.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/23890304363.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/guzeferenoporilulejapaxox.pdfIn PDF document text
    • https://s3.amazonaws.com/tadovu/nemixejuzekavifebilad.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/753aec35-f156-403c-9894-e11bf6d78952/82243465991.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d052d090-9ad6-4ba1-9af3-fbf5f0bd4d7f/kefujon.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b9ab94a3-a875-46b6-a0cc-08d111744883/serutadigovurikofasosu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/52dc9200-6939-4f46-af12-2a66315c7a3c/17291412435.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fded4ca3-2229-40b3-b7b2-f75b07b7e4ac/50739112093.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/9982431793.pdfIn PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/89496598103.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/1664864521.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/93668146285.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_off000078e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78E0 5160 bytes
SHA-256: 2bc1e259c7d45bac6054d0eec728e796663bacfbbde1e963a7a2ecd6ec3c24ce
font_01_sfnt_off00008a53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A53 10144 bytes
SHA-256: 0dff5cedd44d9fce270d129dc24530c190d6ba9b3c9348a25415b914526ad101

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