Malicious PDF — malware analysis report

Static analysis result for SHA-256 384eda0307c80d33…

MALICIOUS

PDF

74.0 KB Created: 2021-02-01 15:46:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: cb4b75fba214834738c8cded80ec0a9d SHA-1: 77343c3351cbb50bfe048d6bd0e847ca6ace508d SHA-256: 384eda0307c80d333cd4b21c179736d9b7f6b80bd6947eb65ffbdd71df5f6265
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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.
  • 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://baarspo.ru/123?utm_term=with+wizard+of+oz PDF link annotation
    • https://jenosexafunira.weebly.com/uploads/1/3/4/6/134686035/809a6.pdfIn PDF document text
    • http://begezuwoxinum.iblogger.org/kaduna.pdfIn PDF document text
    • http://kuziluzesoga.22web.org/7835144595.pdfIn PDF document text
    • http://sokelekife.iblogger.org/55353978583.pdfIn PDF document text
    • https://sekorora.weebly.com/uploads/1/3/4/8/134856449/032f07a.pdfIn PDF document text
    • https://jalusuduzewot.weebly.com/uploads/1/3/1/4/131456012/5140525.pdfIn PDF document text
    • https://sukivafuxek.weebly.com/uploads/1/3/0/8/130874221/suzuzefepireji-dozulisekenaw-jesuxivefizoto.pdfIn PDF document text
    • http://mekozeka.66ghz.com/pufezanekoxiselunelozafo.pdfIn PDF document text
    • https://gidupewurugi.weebly.com/uploads/1/3/1/6/131637306/bunegazeref-segiwabetit.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/kotodur/dosilesokoxuzerogam.pdfIn PDF document text
    • http://dimizisunope.epizy.com/milemiruwobi.pdfIn PDF document text
    • https://s3.amazonaws.com/jupoti/30854463537.pdfIn PDF document text
    • https://s3.amazonaws.com/povodijirig/muy_vs_mucho_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/ritoma/mueller_report_amazon_uk.pdfIn PDF document text
    • http://raxusitusumulag.rf.gd/layering_technique_in_anterior_composite_restorations.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_off0000e457.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE457 4940 bytes
SHA-256: 9c64aca4b1c387c24b1d00fcb6ce43ed77cc343065d9d78c06d76fedb1f55bb4
font_01_sfnt_off0000f544.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF544 11340 bytes
SHA-256: f409144461029ef244ecb324fca35c52e1d59a0262f0126a9fc2d7b5c711ca70