Malicious PDF — malware analysis report

Static analysis result for SHA-256 eddcc98b99554f11…

MALICIOUS

PDF

70.6 KB Created: 2020-11-14 21:44:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: bffcab81df01a9a5f3e6f13b7593826c SHA-1: 2ff159bd755ea55f38c2d4f652bc01279f0ce665 SHA-256: eddcc98b99554f116e7acdb68a2e1ce24a1f90623762a6859ccc9cf69ae11cfd
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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.
  • 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://traffking.ru/strik?utm_term=shuddh+desi+romance+movie+download PDF link annotation
    • https://waxovidimised.weebly.com/uploads/1/3/4/4/134446407/zeripirebegegiw-zepapivudula-xaxaga-kiwewika.pdfIn PDF document text
    • https://wemibevufiwoseb.weebly.com/uploads/1/3/0/8/130813314/suvatonilud-dunevex.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/db31e8d4-b6a8-400a-a5b8-11f7c3be55ae/86960177999.pdfIn PDF document text
    • https://s3.amazonaws.com/wazorixekunafob/10th_class_maths_book_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c130e13f-c679-4493-ad68-691e7e550e6f/xps_pro_series_marine_battery_charger_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/21c06a69-861f-440b-9669-d57723d0305e/likerivunijono.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bce514a9-2b3e-4dd5-842e-ca7e215f062a/unlocker_2_client_samsung.pdfIn PDF document text
    • https://s3.amazonaws.com/mukut/lg_55ls4500_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/beb117ee-590c-477e-a942-026305f60fd5/vavozobumatareti.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6e8e9354-eaab-4286-8ed6-daede34f23ba/bimudiji.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e38710d4-1b4f-43a5-8d04-4b027e772769/86309728992.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/788d4fa6-e4f5-4570-8385-f0bca2ef36ec/77501356485.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/26a596b8-a005-432f-b2af-2f56e20df2ef/73919987439.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3e76f66b-65ba-4b27-89ff-fa146073ddec/nanogozafixov.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_off0000d866.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD866 5436 bytes
SHA-256: ec4bc0130f9a60cbe438029f40509c8fcffb1589540a570ddf4c7bb0aedbd798
font_01_sfnt_off0000eac1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAC1 10276 bytes
SHA-256: 557519ccc2749650fccbf448ec9f69eca2df0d1aa5de081119312c90012db37d

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