Malicious PDF — malware analysis report

Static analysis result for SHA-256 efa0dfde98dc9a73…

MALICIOUS

PDF

65.9 KB Created: 2020-12-20 13:58:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 5eb0633085985e7ef77dea087fcb62bf SHA-1: 2ada931e66f7bb5a9e5004595950a65a1a00fa4c SHA-256: efa0dfde98dc9a737dd1b11a4b94589f731ffbd1a8f7b78bc9af1bcbf55d369e
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://traffset.ru/123?utm_term=middle+earth+shadow+of+mordor+strategy+guide PDF link annotation
    • https://xatuvapezorix.weebly.com/uploads/1/3/4/5/134595272/sesamirikaxom_rarizotopun_xarumejira_luxemirako.pdfIn PDF document text
    • https://wisolowiguwo.weebly.com/uploads/1/3/4/6/134630140/3359878.pdfIn PDF document text
    • https://jagunafine.weebly.com/uploads/1/3/4/3/134363358/relejududutu.pdfIn PDF document text
    • https://pevusipifo.weebly.com/uploads/1/3/4/8/134863194/9317975.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc79d879849b27a00a77670/t/5fd677f9d654060362cb0349/1607890937205/gujijabetof.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/89ec1280-e695-492e-9b8b-b29ed054bc24/jopodidedodebutoka.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fce56132ebf7d3ac645cd13/t/5fd1888b880fa23343ccb2c5/1607567500084/17387607380.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fdd363137a75c289d58a145/t/5fddacf7d85ca26442efbe82/1608363256219/ausformulierter_lebenslauf_muster_schler.pdfIn PDF document text
    • https://s3.amazonaws.com/tugumeb/life_cycle_of_a_robin.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc18f8d0a2757459be7919f/t/5fc4de553570fb44d19bb87d/1606737493682/a_letter_from_a_region_in_my_mind.pdfIn PDF document text
    • https://s3.amazonaws.com/nuxepiduded/samsung_vrt_steam_washer.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc11a4c405d5340f32abf29/t/5fca0a6d1a258d244fe4584f/1607076465454/drop_it_low_for_jesus_full_video.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fdd2c3c5b7bc966055df3f1/t/5fdd53a851a86c1b6c0a9971/1608340393324/vorid.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/46fca6ff-86be-4e77-aefe-96b3b8f53b47/73107437106.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc551856609fd0ee7aecdc2/t/5fce238f0ab5d62feb1b81fa/1607345043100/thunder_assault_raiden_striker_unlimited_crystal_android_1.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_off0000c60b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC60B 5520 bytes
SHA-256: 31f0d55627b90f6b132c0e640d15b26b3c8286b5c470b7a78f10f564770c3c08
font_01_sfnt_off0000d8c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8C6 9976 bytes
SHA-256: 5adbccd435c5c0aefba9227d4cf3e409c23b46a81c697229f508779c2d31ce0d

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