Malicious PDF — malware analysis report

Static analysis result for SHA-256 14a29d2d794310e9…

MALICIOUS

PDF

70.0 KB Created: 2020-12-25 17:48:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 280e8e96de72f0d5cf2cae7e88afe8b6 SHA-1: 5a0310a4a74d26e62f7998c25f9ed196ee7f2aa4 SHA-256: 14a29d2d794310e945d57ba2b85df1d7cccaf0d68fa74760a845aece7418ab94
254 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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://cctraff.ru/123?utm_term=stuva+loft+bed+assembly In PDF document text
    • https://cdn-cms.f-static.net/uploads/4384035/normal_5f8ce5cd9c291.pdfIn PDF document text
    • https://xorizugabe.weebly.com/uploads/1/3/1/3/131398100/053e1b13b4d961.pdfIn PDF document text
    • https://kigovedinefetup.weebly.com/uploads/1/3/1/3/131384362/ruvamosojezijetam.pdfIn PDF document text
    • https://cdn.sqhk.co/duwewofowus/hjjbx1N/airplane_crash_movies_on_youtube.pdfIn PDF document text
    • https://teriwogawuf.weebly.com/uploads/1/3/2/8/132815342/8064897.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450516/normal_5fd7b51c7623e.pdfIn PDF document text
    • https://sazunanu.weebly.com/uploads/1/3/4/5/134596286/241c85c5251.pdfIn PDF document text
    • https://getenulezawo.weebly.com/uploads/1/3/4/8/134897364/jejapuxuj_jofeguwuled_garumipivolepi.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/9d9d864c-8ba8-4660-b7ef-71e745dfa19b/60024308732.pdfIn PDF document text
    • https://s3.amazonaws.com/vufuzewasi/whack_the_computer.pdfIn PDF document text
    • https://s3.amazonaws.com/safenalavojuwu/olympus_camedia_master_4._2_free.pdfIn PDF document text
    • https://s3.amazonaws.com/pugomonapoxuxe/islamorada_fishing_report_june.pdfIn PDF document text
    • https://s3.amazonaws.com/memul/revista_national_geographic_brasil.pdfIn PDF document text
    • https://s3.amazonaws.com/fizaxo/periodic_table_with_atomic_mass_number.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/45f01ccb-7822-483b-97f2-b0fad16ddb36/bufugejiki.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_off0000d416.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD416 5360 bytes
SHA-256: 25b3fe4e60174fbbc28e44fdcbb56773c23382104bcaeb1e5a0c0db40b3758e5
font_01_sfnt_off0000e651.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE651 10936 bytes
SHA-256: 6a5a8dbb505487888a724d8c24e9aba1812a270e52e93d0a394921c6dd4b19c7