Malicious PDF — malware analysis report

Static analysis result for SHA-256 710275fc3b2c1141…

MALICIOUS

PDF

78.8 KB Created: 2021-02-25 21:01:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 7a4f930e158d3abab463ecad3f5f1114 SHA-1: b153a9a22de468c1de49f99e161409ad5daff85f SHA-256: 710275fc3b2c114149a0c600462b411d4425d8c1a7d2ca6bb561dc68927b1cbb
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://leonvi.ru/aws?utm_term=krups+mini+kegs+for+sale PDF link annotation
    • https://fozejabaf.weebly.com/uploads/1/3/5/3/135305581/3621669.pdfIn PDF document text
    • https://kobivepetere.weebly.com/uploads/1/3/1/8/131871499/4eb45.pdfIn PDF document text
    • http://lixorajepidil.mygamesonline.org/troy_bilt_lawn_mower_carburetor_gasket.pdfIn PDF document text
    • https://wunogalabapa.weebly.com/uploads/1/3/4/6/134603674/ca62954f2.pdfIn PDF document text
    • https://dasowafajego.weebly.com/uploads/1/3/4/7/134723411/8716341.pdfIn PDF document text
    • http://gexomafe.mypressonline.com/how_do_you_reset_a_lennox_air_conditioner.pdfIn PDF document text
    • https://jekosupoma.weebly.com/uploads/1/3/1/6/131637113/737817be.pdfIn PDF document text
    • https://tuzakalo.weebly.com/uploads/1/3/4/4/134492431/tegul.pdfIn PDF document text
    • http://pofaduxiruk.getenjoyment.net/international_journal_of_medical_sciences_and_current_research_pubmed.pdfIn PDF document text
    • http://gejesixave.scienceontheweb.net/the_7_laws_of_spiritual_success.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/fupanabivote/18854520284.pdfIn PDF document text
    • https://s3.amazonaws.com/belapawerezuju/biolite_baselantern_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/mikibetiv/78106229967.pdfIn PDF document text
    • https://s3.amazonaws.com/bupijila/android_auto_su_toyota_corolla_2019.pdfIn PDF document text
    • http://feselipalez.epizy.com/61735684878.pdfIn PDF document text
    • http://nixomirorubu.myartsonline.com/leribufutoxenasenexuniz.pdfIn PDF document text
    • https://s3.amazonaws.com/rorives/effects_of_noise_pollution.pdfIn PDF document text
    • https://s3.amazonaws.com/xalasawu/74841650191.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_off0000f5a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5A9 5252 bytes
SHA-256: 1d466d24b9a7b08d0976483a9d30c214d7e007c552388d0d88e07bd941b4f42d
font_01_sfnt_off00010776.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10776 11352 bytes
SHA-256: c2f2a1ae414d34e5ee01538d99e5a6a632e1fafe1e25ecaef60c3b68032792e1