Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea2c2b10b6f695f1…

MALICIOUS

PDF

80.1 KB Created: 2021-02-06 08:03:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 247d51b5f79fb220c2494c3f753081f4 SHA-1: 4e3fc7ea207e2713fa2c192e5d4c0548c75671ef SHA-256: ea2c2b10b6f695f1f5efee66fba95e52d0ac75f5db1bf7432cde396a4698be4f
196 Risk Score

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://leonvi.ru/wb?keyword=dueling%20banjos%20sheet%20music%20violin%20free PDF link annotation
    • http://lighterusb24.site/free_slots_machine_in_italiano_gratisqst30.pdfIn PDF document text
    • https://xoverepidagagit.weebly.com/uploads/1/3/4/4/134469055/505019.pdfIn PDF document text
    • https://cdn.sqhk.co/liweruruzed/ijg02gg/my_land_air_south_easton_ma.pdfIn PDF document text
    • https://bakadowo.weebly.com/uploads/1/3/1/3/131380427/d6247.pdfIn PDF document text
    • http://donbetosstreettacos.com/pawodixujaxosabozef1z0i.pdfIn PDF document text
    • http://levantegroup.net/pitru_devatha_stotram_in_telugusoik9.pdfIn PDF document text
    • https://vuvuzuvikedatun.weebly.com/uploads/1/3/4/5/134529562/balaji-pudosidufoke-xamejofaneg-tisazareva.pdfIn PDF document text
    • https://lolorude.weebly.com/uploads/1/3/0/7/130775760/wiponu.pdfIn PDF document text
    • https://suvamowifav.weebly.com/uploads/1/3/4/3/134351486/naxamid-nemiwusi.pdfIn PDF document text
    • http://ca-manalapan.space/pokemon_go_kanto_pokedex_151ru4q8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xilawon.epizy.com/tnpsc_aptitude_questions_answers_in_tamil.pdfIn PDF document text
    • https://s3.amazonaws.com/nitirew/30843812119.pdfIn PDF document text
    • https://s3.amazonaws.com/fivebo/south_african_indemnity_form_template.pdfIn PDF document text
    • https://s3.amazonaws.com/bugutaj/gajipisafaxojowopotolo.pdfIn PDF document text
    • https://s3.amazonaws.com/novifamigot/cool_jazz_font_for_huawei.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_off0000ef62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF62 5572 bytes
SHA-256: dad4463301be80ea5bae60ea88f88f26e1afb9e804c7f77ee13bd53bf1207e1d
font_01_sfnt_off00010241.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10241 15312 bytes
SHA-256: 8b77beb510e889f854888ee7529e9877d308d10a75cdbfe0bfc7e21fde0e8b1e