Malicious PDF — malware analysis report

Static analysis result for SHA-256 f07dbc4b734088b8…

MALICIOUS

PDF

65.6 KB Created: 2021-03-29 11:59:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: d43a5644a805a3d218ec3654b28f6cf2 SHA-1: 1b2db3daa9fe69fb126e2e84b16139774322e666 SHA-256: f07dbc4b734088b81c170512e80050c9f8596788b3f57e5a6131c971e4fccfd2
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

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 0.9993

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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://druttle.ru/123?utm_term=delta+bandsaw+manual PDF link annotation
    • http://milky-rp.space/19675561689a9ma.pdfIn PDF document text
    • http://good-production11.site/nexiwufomasufizakomoflvk8.pdfIn PDF document text
    • http://loxesitigogu.iblogger.org/eyeball_drawing_guide.pdfIn PDF document text
    • http://aov.one/jonathan_livingston_seagull_movie_reviewydqtd.pdfIn PDF document text
    • http://kutegexuwudaro.getenjoyment.net/67082323780.pdfIn PDF document text
    • http://jipuvojenibomig.22web.org/aimpoint_golf_chart.pdfIn PDF document text
    • http://wiinorama.space/bomepikironaworufigodu7qn4c.pdfIn PDF document text
    • http://kawafopi.mygamesonline.org/ilive_true_wireless_bluetooth_waterproof_earbuds_review.pdfIn PDF document text
    • http://pakekoramiduwin.getenjoyment.net/sinekebuxej.pdfIn PDF document text
    • http://monubaz.iblogger.org/45006603264.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vidoxoda.rf.gd/26911517057.pdfIn PDF document text
    • http://zopofomolukomek.rf.gd/lavosezaz.pdfIn PDF document text
    • https://s3.amazonaws.com/mexijegedakol/onkyo_tx-nr636_bluetooth_problem.pdfIn PDF document text
    • http://vapovalexuma.epizy.com/european_resuscitation_council_2018_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/vovuzize/calendar_template_2019_word_printable.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aedad8a5-bb7d-44bc-a1de-ce5311c072c5/6356976831.pdfIn PDF document text
    • https://s3.amazonaws.com/migivewuwe/lezugunufomum.pdfIn PDF document text
    • http://wosikomalaza.epizy.com/15162150646.pdfIn PDF document text
    • https://s3.amazonaws.com/daxemo/chrome_remote_desktop_android_add_computer.pdfIn PDF document text
    • http://wexoloxi.rf.gd/jizewagoved.pdfIn PDF document text
    • https://s3.amazonaws.com/rujabepifar/differential_equations_series_solution_calculator.pdfIn PDF document text
    • http://giduwenodi.epizy.com/rofipelozeje.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1bf744a0-7833-4012-84c2-2bf5ce05ad54/68689989018.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_off0000c615.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC615 5104 bytes
SHA-256: 3d219378099fd7fdda4789a8392025c07605dc0adfe1da27ae1a806072b05f63
font_01_sfnt_off0000d771.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD771 9896 bytes
SHA-256: 61d1f49bd906508bca7b270005805f05800c46f9e2cdede222ca14cc2aca0607

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