Malicious PDF — malware analysis report

Static analysis result for SHA-256 acbaeba2225598ea…

MALICIOUS

PDF

44.1 KB Created: 2020-11-06 16:02:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 98108aefc228b3bd7e25c1696f8af4a3 SHA-1: f56fb713bc11cfaeefff4a22a9f78451a59c7e86 SHA-256: acbaeba2225598eae6534bd5545235011a312c73f3475f355daad0fd743e7cf6
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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://traffmen.ru/123?keyword=download+anet+a8+manual In PDF document text
    • https://cdn-cms.f-static.net/uploads/4424330/normal_5f9784bf2d9ff.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408582/normal_5f9baf22a0e60.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/db9229d3-19b4-442d-a108-9e154e1b6c77/fetamimabijaligegij.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/748a4216-9d00-46f6-add8-80ed1bbee692/37081654484.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/139c3881-fe44-4f25-a5ee-982783b5ac19/68380073930.pdfIn PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/93591253281.pdfIn PDF document text
    • https://tevarew.files.wordpress.com/2020/11/88608638079.pdfIn PDF document text
    • https://jopafez.files.wordpress.com/2020/11/luxenifinuzejomerutif.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/abd36a3a-f273-4b31-a058-cca23b999ddd/watedamomodofegipat.pdfIn PDF document text
    • https://wejogude.files.wordpress.com/2020/11/niwasegini.pdfIn PDF document text
    • https://xuminewewebi.files.wordpress.com/2020/11/15670121941.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0940facc-3d01-429a-bc61-6b29f49f4619/ashrae_standard_170_free_downloa.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_off000069f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69F8 4984 bytes
SHA-256: e1dbae3db35dd3d44a1f513be88c7828cbc11d335a4d87becbd8a5031515b1a6
font_01_sfnt_off00007af2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AF2 12440 bytes
SHA-256: c363c2214a93d4d8f87c15aa70e50b824eb551c7e21b7365baea7826ba9ac43f