Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c06ca1d7e42e28c…

MALICIOUS

PDF

81.8 KB Created: 2021-03-25 09:21:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: fb7acfc2072a27a551548c608e96f4fa SHA-1: ecacb5e05697ca73ddff7b51c765a14e346535fd SHA-256: 5c06ca1d7e42e28caf4bb97b5b334f59040c9a481bb0102811bf1bf66c0511c6
196 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating it is part of an SEO link farm designed for phishing or malware distribution. It includes an external URI pointing to 'resalured.ru' which is likely a redirector to a malicious site. The ML classifier and ClamAV detection strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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.
  • 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://resalured.ru/award?keyword=canadian+citizenship+checklist+pdf PDF link annotation
    • https://s3.amazonaws.com/tobovunoberiki/vusukitezuzemelopatukuxuv.pdfIn PDF document text
    • http://ecoservice-vlad.ru/the_new_leaders_100-day_action_planjtq6o.pdfIn PDF document text
    • http://kinorio5.xyz/devesoqrp2a.pdfIn PDF document text
    • https://s3.amazonaws.com/tufujifinobiro/what_happens_during_neural_tube_formation.pdfIn PDF document text
    • http://tixshopclub.fun/how_to_cite_pentagon_papers_chicago_stylekntcf.pdfIn PDF document text
    • http://axecheat1.xyz/baba_is_you_meta_guidel6g0q.pdfIn PDF document text
    • https://s3.amazonaws.com/susonanezaj/company_organizational_chart_powerpoint_template.pdfIn PDF document text
    • http://xunarepozufuz.mygamesonline.org/pexepefi.pdfIn PDF document text
    • http://konalofasu.mywebcommunity.org/sieve_analysis_of_fine_aggregate_test_procedure.pdfIn PDF document text
    • https://s3.amazonaws.com/fonazuzixagizir/jufuxefizatebokuw.pdfIn PDF document text
    • http://vetebozo.mypressonline.com/gudelupekup.pdfIn PDF document text
    • http://gatorama.fun/bowflex_xtreme_2_se_home_gym_weight5e603.pdfIn PDF document text
    • http://vovality.club/homeless_survival_guidecgjon.pdfIn PDF document text
    • http://wwbook.org/dopamufanuwovudofbp7y7.pdfIn PDF document text
    • https://s3.amazonaws.com/gulapore/how_to_tie_a_secure_knot_for_a_necklace.pdfIn PDF document text
    • http://reawolt.online/iit_jee_mains_cutoff_2016bcib5.pdfIn PDF document text
    • http://inglassrus.ru/vakafamodokugugujuvemije3aosq.pdfIn PDF document text
    • https://s3.amazonaws.com/livivuvuwugeb/21669528826.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://82c1a4a6-0aea-44ab-842b-07cb5bdde860.filesusr.com/ugd/aafee9_8cca644f210e4797b76722e14a6a4cac.pdf?index=trueIn PDF document text
    • https://69cf8a46-0d3d-4b71-8fd1-93df925da18e.filesusr.com/ugd/e4064d_2019590d3a094213994fbdfecfc4b979.pdf?index=trueIn 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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ed37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED37 5164 bytes
SHA-256: d7bb45481e216039d2f7de17431e1d65cf5abb8f39afbbbbd7637fa7f8f7dc1a
font_01_sfnt_off0000fed3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFED3 10932 bytes
SHA-256: 8afc7b19c1b4dbb2c2d806296284a6dca31006f84cf4d34b0fb14f7d00c62729
font_02_sfnt_off0001243f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1243F 16240 bytes
SHA-256: 281214d1119d96f3a8ebe36682ff3c94e77595198e0ed7d049f81fad77dcdf11