Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc452310987caac6…

MALICIOUS

PDF

93.0 KB Created: 2021-03-13 22:06:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: bb204e73528bad6f981f2040f9f9ac3c SHA-1: 921a484b94107d5165b541dd7a71980ed7cf75c2 SHA-256: cc452310987caac659aba5d33b71f1a71456f13268859ae0789fff91adb1b5c4
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

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 0.9967

Heuristics 6

  • 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 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.
  • 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://golowaki.ru/strik?utm_term=what+is+a+secret+love+on+netflix+about PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4393209/normal_6010562ed2db4.pdfIn PDF document text
    • https://cdn.sqhk.co/xovepejegosi/iaariaX/startpage_search_box.pdfIn PDF document text
    • https://cdn.sqhk.co/tononapiwaso/jijjgHR/zodafoparufamuditebawajig.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417325/normal_5fdd9229273ea.pdfIn PDF document text
    • https://cdn.sqhk.co/dagufiwus/je5hhih/lumino_city_coupon_code.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370080/normal_5ff48deaaac4c.pdfIn PDF document text
    • https://wuvotawek.weebly.com/uploads/1/3/4/8/134872633/foxexebibaru-wabaworakekito.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4391634/normal_5ff01fe99d65b.pdfIn PDF document text
    • http://telovajov.medianewsonline.com/sportdog_collar_not_responding.pdfIn PDF document text
    • https://pumijisiror.weebly.com/uploads/1/3/1/3/131381241/6a0ad98b9504f.pdfIn PDF document text
    • https://cdn.sqhk.co/xixujipum/idjijhb/libuliwu.pdfIn PDF document text
    • https://cdn.sqhk.co/keximovib/b7XbTih/rotumidiwulatajolusemu.pdfIn PDF document text
    • http://lnstagramverifycentre.com/how_to_put_sony_mdr-xb950b1_in_pairing_moderfa9v.pdfIn PDF document text
    • http://bagomebefekixob.getenjoyment.net/kederajokogunuzigidi.pdfIn PDF document text
    • https://lipuxavevafip.weebly.com/uploads/1/3/1/3/131398459/272445.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465010/normal_5fd06404608ff.pdfIn PDF document text
    • http://pannochki-art.com/juwipojeguzeradonitawavapt9x3y.pdfIn PDF document text
    • http://negedibomul.sportsontheweb.net/punubaliguru.pdfIn PDF document text
    • http://zonizubiro.getenjoyment.net/ap_studio_art_2d_portfolio_requirements.pdfIn PDF document text
    • https://cdn.sqhk.co/senuziker/b5ggRid/dhoom_2_full_movie_download_filmywap_telugu.pdfIn PDF document text
    • https://fibetenozogu.weebly.com/uploads/1/3/0/8/130813768/lafokevevobiz.pdfIn PDF document text
    • http://hookup153.site/storyboarding_essentialsy5v1a.pdfIn PDF document text
    • https://cdn.sqhk.co/zebasama/8hiiBsd/85440896097.pdfIn PDF document text
    • https://cdn.sqhk.co/zapevexuvot/aHhiDmw/life_science_alliance_journal_impact_factor.pdfIn PDF document text
    • https://cdn.sqhk.co/gixejefi/chd08qv/texas_jurisprudence_exam_study_guide.pdfIn PDF document text
    • https://varusimutajol.weebly.com/uploads/1/3/4/5/134502614/redugazafamex.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off00012cff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12CFF 5252 bytes
SHA-256: 988f3bbe03ad7cc52296282c47d9eb926759668121905561d8dc1c124575beba
font_01_sfnt_off00013eec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13EEC 11656 bytes
SHA-256: 4f9dede2f54e065245a4e586dc399a79b1a11b8ce94a52c6f9fc62b37e8d0645

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