Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea6b7ccf7ce61a4a…

MALICIOUS

PDF

82.3 KB Created: 2021-03-25 07:10:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 978c47845b9dc1c1c366527fbd5ce244 SHA-1: d9b3e7f3a3811b8e31f4807673a73ae8847faf7f SHA-256: ea6b7ccf7ce61a4aed5af5be5ea0e87258532c69aef8507dbe4a53fbcfa03608
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains a high-severity heuristic indicating it's a phishing lure using an SEO redirector. The embedded URL, https://xajibur.ru/wix?keyword=nova+wave+that+shook+the+world+worksheet, is the primary indicator of malicious intent, likely leading to a phishing page. ML and ClamAV detections further confirm its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://xajibur.ru/wix?keyword=nova+wave+that+shook+the+world+worksheet PDF link annotation
    • https://fodigedij.weebly.com/uploads/1/3/2/7/132740281/135806.pdfIn PDF document text
    • http://55571.ru/autocad_2010_30_days_trialkc1rp.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456676/normal_5fdd3b63db9d8.pdfIn PDF document text
    • https://pukaxonimuno.weebly.com/uploads/1/3/4/4/134435323/2889128.pdfIn PDF document text
    • http://tevfikyuce.xyz/kepuzosedubilatj8dsb.pdfIn PDF document text
    • https://cdn.sqhk.co/kobedobofepo/hcibggL/28811417734.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501810/normal_6038c59aa7405.pdfIn PDF document text
    • https://raxopukefafifi.weebly.com/uploads/1/3/2/6/132695755/subisugerisa.pdfIn PDF document text
    • http://amsidisi.xyz/zefosabixougcb7.pdfIn PDF document text
    • http://plusstore.pro/vodimmixtq.pdfIn PDF document text
    • https://doleroxewaforud.weebly.com/uploads/1/3/4/3/134322791/c4501206.pdfIn PDF document text
    • https://fulimutalez.weebly.com/uploads/1/3/4/5/134599943/3386593.pdfIn PDF document text
    • https://cdn.sqhk.co/temegolu/gggiih9/turbo_drift_3d_car_racing_game_download.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/4d8eb28c-4d1a-4d5b-b4be-6dc8fa5a9d3f/24410296021.pdfIn PDF document text
    • https://s3.amazonaws.com/pomaxa/sesulamijavujawozom.pdfIn PDF document text
    • https://s3.amazonaws.com/fofeguj/marorotason.pdfIn PDF document text
    • https://s3.amazonaws.com/pipaneku/nagojolaxowubitafubizeta.pdfIn PDF document text
    • https://s3.amazonaws.com/samopakamefap/kezokuxezowiwidotekisute.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2b670458-53c9-4605-bfc6-e1fefbeb17fa/18701075347.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fc85a781-d3c8-42cc-a1c6-58bd9c595f01/flir_tg165_price.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f6c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6C5 4732 bytes
SHA-256: 8ee66e6e4b2a11e40800d11d99c3ee92a9877217cd6180a3f1433abe12cedff4
font_01_sfnt_off00010704.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10704 10860 bytes
SHA-256: 4deaef34cd711493bca55f098cdf3fb6c2635aa549f467aca7981a56f84bf105
font_02_sfnt_off00012bf4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12BF4 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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