Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d610ed0a7622fe5…

MALICIOUS

PDF

74.8 KB Created: 2021-02-10 18:13:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: f47876ba0d61082990b277d70f37c8ed SHA-1: 846396f6bdf95b0f10aaaa70b079125e135d4d96 SHA-256: 5d610ed0a7622fe5e6aa47c3e09735efc2685c45b1792bb5e442524c9de005b1
254 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/wb?keyword=high%20performance%20car%20parts%20store%20near%20me In PDF document text
    • https://fefezotexarij.weebly.com/uploads/1/3/4/2/134265886/xefamazajaka-goxij-ferikawo.pdfIn PDF document text
    • https://cdn.sqhk.co/tezofugowura/ggxihlG/85546358474.pdfIn PDF document text
    • https://pudijeda.weebly.com/uploads/1/3/4/5/134586696/taruwub-naluxabogi-zitugi.pdfIn PDF document text
    • http://sonezabejudazof.22web.org/viranumupoxotigisarejamuf.pdfIn PDF document text
    • https://cdn.sqhk.co/jujejorule/igdg1Ch/1941.pdfIn PDF document text
    • https://cdn.sqhk.co/disumuneriva/j1Tjc2j/car_driving_training_simulator_games_online.pdfIn PDF document text
    • https://rizogogitire.weebly.com/uploads/1/3/5/3/135323834/1411354.pdfIn PDF document text
    • https://cdn.sqhk.co/jimumakevaji/hejh7sy/tefexejepigifalukefivezem.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/kozewuposoridil/tumusukamezekojetenut.pdfIn PDF document text
    • https://s3.amazonaws.com/bitajemisajoz/farewell_party_invitation_card_template.pdfIn PDF document text
    • https://s3.amazonaws.com/nabifovu/wizemaromi.pdfIn PDF document text
    • https://s3.amazonaws.com/gurupixabogivaz/35366082417.pdfIn PDF document text
    • https://s3.amazonaws.com/varoximu/nikiluzuniw.pdfIn PDF document text
    • http://dirojuriju.epizy.com/arena_of_valor_china_apkpure.pdfIn PDF document text
    • https://s3.amazonaws.com/rewepalazamiso/matching_numbers_to_words_worksheet_1-_10.pdfIn PDF document text
    • https://s3.amazonaws.com/tulosa/precalculus_inverse_functions_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/kujapomib/meletufevaxiber.pdfIn PDF document text
    • https://s3.amazonaws.com/jupudizadid/impregum_penta_soft_safety_data_sheet.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_off0000e2b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2B7 5356 bytes
SHA-256: a1c62c027fa68f3fbd96b49ef8a3e13ced1a34aa955ded407e46fbed1b21df86
font_01_sfnt_off0000f4c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4C9 12808 bytes
SHA-256: 264ee8c5ca2a9ba8044ce5e25aa61487e070c1b57ef21acce662ee958eb25586

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