Malicious PDF — malware analysis report

Static analysis result for SHA-256 3873becc6a6130f3…

MALICIOUS

PDF

68.3 KB Created: 2021-02-04 12:26:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 4885d714bf201130ba6a2bb255bdc827 SHA-1: b831f660c803bbfd99f50130bb775900dbd2a4d8 SHA-256: 3873becc6a6130f398fa6f1394c47c3cec65949d517d7313037b3c8f1adfb934
136 Risk Score

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
  • 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://jacksth.ru/aws?utm_term=motorola+android+one+vision PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4474720/normal_5fdf006ac061a.pdfIn PDF document text
    • http://frankiearvelo.com/ratios_and_rates_worksheet_answer_key5qmyd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4488582/normal_5fe2639ba2243.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481072/normal_601acc9caf1d9.pdfIn PDF document text
    • http://salukapebuke.iblogger.org/11298839747.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495059/normal_5fcdb71159a65.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480582/normal_60090e537543b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381740/normal_601a542c49f69.pdfIn PDF document text
    • http://verenica.net/zinobetofusemudefolqmjaw.pdfIn PDF document text
    • http://shopsupergood.site/roll_of_thunder_hear_my_cry_movie_google_drive7npom.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414161/normal_5fd8ed058a7bf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378167/normal_5fe2a11216f22.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/pipaneku/lubizipojigawozo.pdfIn PDF document text
    • http://wokoguzesel.rf.gd/axa_uk_annual_report_2017.pdfIn PDF document text
    • https://s3.amazonaws.com/widuxade/55861851459.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_off0000d03a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD03A 4884 bytes
SHA-256: 8a9e32a9aaf1c78785c562123b749e1f114f1b9a96eb68c39431cb1e0ee77a42
font_01_sfnt_off0000e0f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0F1 10336 bytes
SHA-256: 3f783d63de3314d6e9d9c9039fc499d2fa3e768a2c70735e7840095ff58df329