Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d68e4445e6e429d…

MALICIOUS

PDF

72.0 KB Created: 2021-02-19 01:11:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 29ed3c59c8bf71b22fdd8b4cdee1d4d1 SHA-1: bd5bd330293e098dc3ecf3afe3ea541ea91c96b1 SHA-256: 1d68e4445e6e429d4f9a508f4d7ea3d02ae1c14dfbfeb08fcef867f8b912a9ba
236 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 7

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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/wix?keyword=how+to+cancel+direct+energy+protection+plan PDF link annotation
    • http://pabitej.22web.org/butibarevawalon.pdfIn PDF document text
    • https://rasazumeg.weebly.com/uploads/1/3/1/4/131454762/7844125.pdfIn PDF document text
    • http://morpeoplelife.ru/vetiwagizarixalesekiluli0pvcd.pdfIn PDF document text
    • https://cdn.sqhk.co/mujekesire/jj0ighb/flights_from_belfast_city_airport_to_glasgow_international.pdfIn PDF document text
    • https://cdn.sqhk.co/marixefe/TGideid/hallmark_channel_when_calls_the_heart_season_5.pdfIn PDF document text
    • https://cdn.sqhk.co/fijajiles/gLgh5Ky/mobilepay_app_store.pdfIn PDF document text
    • http://damodudajipofem.22web.org/glassdoor_salary_guide_australia.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/tokafanawa/96134886160.pdfIn PDF document text
    • https://s3.amazonaws.com/votubukaxogilix/20274956061.pdfIn PDF document text
    • https://s3.amazonaws.com/wogikokuzotaxa/74176981402.pdfIn PDF document text
    • https://s3.amazonaws.com/wopari/synonyms_worksheets_for_5th_grade.pdfIn PDF document text
    • http://weralawubuzeg.epizy.com/synthesizer_roland_juno_d.pdfIn PDF document text
    • http://fifusudevop.rf.gd/training_evaluation_report_sample.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_off0000ddc6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDC6 5216 bytes
SHA-256: b9c650a984be8fa9576b0e3acd82636d1830a38cacdd6c60255d323f4083624a
font_01_sfnt_off0000efaa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFAA 10376 bytes
SHA-256: c490e1545447fe3c6ad3cb143406b388493aaa891a771b52c5d4660b598c9d22