Malicious PDF — malware analysis report

Static analysis result for SHA-256 dcd0eebb3ed31c28…

MALICIOUS

PDF

75.4 KB Created: 2021-04-13 20:52:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: be233680e7db648dd6069d8f62694cc9 SHA-1: 75d0d30c37baec147ebf275af0c1564e3846f243 SHA-256: dcd0eebb3ed31c28a8d76bf006491a9d6e6cdba6ed8cd731718403d6e2cc9090
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 0.9997

Heuristics 5

  • 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.
  • 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://lozipotod.ru/strik?utm_term=colored+pencil+drawings+step+by+step PDF link annotation
    • https://cdn.sqhk.co/xaduwudixum/jdhiKib/45013095954.pdfIn PDF document text
    • https://cdn.sqhk.co/raxoxawupej/ajgAV1G/pocket_option_broker.pdfIn PDF document text
    • https://cdn.sqhk.co/kisunika/Ajiihbx/89799694133.pdfIn PDF document text
    • https://cdn.sqhk.co/wepurodapike/03iclhh/amc_30_olathe_ks_showtimes.pdfIn PDF document text
    • https://cdn.sqhk.co/rokabumake/Mhj7Xgi/line_brown_farm_hack_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/devisofage/jgezif5/61059360721.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/wujodibu/does_liver_detox_really_work.pdfIn PDF document text
    • https://s3.amazonaws.com/sazixipame/tan_registration_application_form.pdfIn PDF document text
    • https://19508648-7f28-415f-8121-b57715dc1465.filesusr.com/ugd/9734e7_ea9a035f2ab74062af9680a3c6fdd1d4.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/7d3b58f5-7c89-4f15-be03-7ff4a64b2a85/sotumikuwavunuzubepuk.pdfIn PDF document text
    • https://s3.amazonaws.com/wazorixekunafob/58181100018.pdfIn PDF document text
    • https://s3.amazonaws.com/gulapore/58475574529.pdfIn PDF document text
    • https://s3.amazonaws.com/paxunu/guzivedevituke.pdfIn PDF document text
    • https://98e80eac-0673-4bf9-a3de-4132461903b3.filesusr.com/ugd/1acd69_d71d9b3bedca4ce9a9329a1a10fbcef8.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wefemabeni/xuludijavikujukoxuga.pdfIn PDF document text
    • https://s3.amazonaws.com/pesetufavo/spotify_songs_to_play_offline.pdfIn PDF document text
    • https://s3.amazonaws.com/dixaleko/barcode_univoco_formato_ean_13.pdfIn PDF document text
    • https://adc0bc6f-2b4d-4951-bce0-9128d215fa34.filesusr.com/ugd/5ea4d5_07f8414a082c44448f89ed3a3c79a494.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/d53b6f34-fe6a-41f8-b78a-977c86075afc/john_dewey_education.pdfIn PDF document text
    • https://9b321a86-0615-40a7-b684-6dced782f4cc.filesusr.com/ugd/e3cae3_924ff0dd0b7d43be9d0532ec71b71acb.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/sifawekujiki/samsung_frame_tv_55_one_connect_box_dimensions.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_off0000eac1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAC1 5480 bytes
SHA-256: 5358036672c9be1a19681da8f2ee3d4e40a28582cf630f5ef947c84816f2a11f
font_01_sfnt_off0000fd77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD77 10156 bytes
SHA-256: 11ca62583676f9413130642991274c549cb2757a3ee23a21126700185a432d98

Open this report in the interactive analyzer, or submit your own file for analysis.