Malicious PDF — malware analysis report

Static analysis result for SHA-256 8800e9491c2f2aa6…

MALICIOUS

PDF

68.3 KB Created: 2021-02-14 08:24:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: aad2cd6531d6580e98533ca44d298813 SHA-1: 32b273abc02caac16be9c4d7eba51797a591b3a0 SHA-256: 8800e9491c2f2aa61f0e14e26085e1de37a5f154e41efdabe1d1dda34f8f9dc4
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://baarspo.ru/wb?keyword=jbl%20charge%203%20manual%20australia PDF link annotation
    • http://xidotamasaw.22web.org/derivative_power_rule_practice_worksheet.pdfIn PDF document text
    • https://paguzijap.weebly.com/uploads/1/3/1/4/131453408/wusatavij-mosigumid-kabene.pdfIn PDF document text
    • http://fezelaradelemuj.22web.org/wojenelogujusum.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370307/normal_5ffb1b02dcd7e.pdfIn PDF document text
    • http://jixelaxoli.66ghz.com/free_anonymous_vpn_android.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386828/normal_5fcfb2ad4560e.pdfIn PDF document text
    • https://kikitepolo.weebly.com/uploads/1/3/4/5/134514310/1252500.pdfIn PDF document text
    • https://milavunaxowe.weebly.com/uploads/1/3/4/7/134717052/sazuwupeferaj_fegujifibudo_fasojazajopo_letarekej.pdfIn PDF document text
    • http://rabusog.22web.org/fgdp_guidelines_selection_criteria_dental_radiography.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tuvivitir.rf.gd/jaheira_romance_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/kujapomib/dropbox_paper_custom_templates.pdfIn PDF document text
    • https://s3.amazonaws.com/lososimap/47520339903.pdfIn PDF document text
    • https://s3.amazonaws.com/rabewiruzitewa/insulin_pump_therapy_guidelines_for_successful_outcomes.pdfIn PDF document text
    • https://s3.amazonaws.com/fomaralunex/bavajarekuzumogukefuw.pdfIn PDF document text
    • http://vineberute.epizy.com/55216842038.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_off0000cbd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBD7 5508 bytes
SHA-256: edaf889a0e859a0da679d3f538cafb506ae5432ad1fd3113eacd8fc7790dae24
font_01_sfnt_off0000de62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE62 12128 bytes
SHA-256: 7e0f4b012d01fed30ff906e77c2e59bdff4d841cfff81711debe29089c7d7f65