Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e517f125cd3a26d…

MALICIOUS

PDF

77.2 KB Created: 2021-03-19 21:27:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: bfb254caf364d3b2844af12f4f3ee943 SHA-1: c527dc06dbe49b550a340ebc7d8f9e810ecc8fac SHA-256: 3e517f125cd3a26dac73f541d98b5700487b50f59805734c1f7c5f74bf93e760
144 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.001 PowerShell

The sample is identified as malicious by ML classifiers and ClamAV, with a high-severity heuristic indicating a lure to execute commands via clipboard manipulation. The embedded URL and other extracted URLs suggest a phishing or malware distribution attempt. The document body, though heavily obfuscated, contains metadata consistent with a PDF generated by wkhtmltopdf, and the presence of external URI heuristics points towards an attempt to redirect the user to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • SEO-redirector lure link (multi-word utm_term) low PDF_SEO_UTM_REDIRECTOR_LINK
    PDF contains a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the search-keyword gateway used by the 'free document download' phishing family. Surfaced as an IOC; on its own this is a low-confidence signal.
  • 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://dugedepap.ru/123?utm_term=jquery+cdn++github PDF link annotation
    • http://tehnikator.ru/dazavalosowenuvupadefyyg2p.pdfIn PDF document text
    • http://proita.space/legaxopudivirufavege0v637.pdfIn PDF document text
    • http://naturebiolog.space/90841682110mx23f.pdfIn PDF document text
    • http://familyit.info/wikaxisugetisik419qj.pdfIn PDF document text
    • http://bomisedoxu.mywebcommunity.org/john_deere_48_inch_edge_belt_diagram.pdfIn PDF document text
    • http://bidimiw.sportsontheweb.net/remotonuxezogujotole.pdfIn PDF document text
    • http://siteznakomstv69.space/episode_choose_your_story_best_limelighth489y.pdfIn PDF document text
    • http://mebovedu.getenjoyment.net/89353212015.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/wozoxub/pokujafaxuput.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/93f45178-bb24-40f0-9d5a-34671b83e7ac/sotuwunovakukul.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f62df2a9-2f02-49df-ba26-9fe706c530ef/what_does_william_afton_sound_like.pdfIn PDF document text
    • https://s3.amazonaws.com/xoxaneral/60441388168.pdfIn PDF document text
    • https://s3.amazonaws.com/sukobogixe/flowers_for_algernon_reading_check_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/43f8e00a-778c-443d-92e7-e74e237cf250/xinikagiderugibiwat.pdfIn PDF document text
    • https://s3.amazonaws.com/kexamoxusinixu/seat_of_the_soul_book_review.pdfIn PDF document text
    • https://s3.amazonaws.com/gedexim/yardi_revenue_report.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1f45d396-c8e6-48eb-8456-eef0d341ca9c/rowojujat.pdfIn PDF document text
    • https://s3.amazonaws.com/zobuwubedak/wotopinajafetim.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2ab918cf-e9f1-4e5e-8803-a79069e87342/what_means_yes_and_no.pdfIn PDF document text
    • https://s3.amazonaws.com/juvosi/ammy_virk_song_mp4.pdfIn PDF document text
    • https://s3.amazonaws.com/pusolefosex/72797660747.pdfIn PDF document text
    • http://bavatesivo.myartsonline.com/how_to_fly_a_sky_rover_outlaw.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ed51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED51 5140 bytes
SHA-256: 06f6972f04794cd13f16accdf76eb0119c1257ea5b89bcbedf3b87e5e56c4c47
font_01_sfnt_off0000fec5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEC5 11552 bytes
SHA-256: 78406ebf4207b185c4d683cb43707c574e69c36b8537aa7258f1aff53db1a4ca

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