Malicious PDF — malware analysis report

Static analysis result for SHA-256 17e27423fd74db35…

MALICIOUS

PDF

84.0 KB Created: 2021-02-14 01:50:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: fd330bb4585b24123a27d37c3b4a1e50 SHA-1: 0cf97915715534e3e23113f2ce6bfda3412bd517 SHA-256: 17e27423fd74db35793c7a6060deed36bacb71a12aee6c876fafd3e042c453c4
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jottigo.ru/aws?utm_term=10+routes+of+drug+administration+pdf PDF link annotation
    • http://iclod.tech/huawei_y360-u82_firmware_free_downloadd1m7n.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460461/normal_60198ed9bb98f.pdfIn PDF document text
    • https://cdn.sqhk.co/redexisa/oicjJgf/59624387094.pdfIn PDF document text
    • https://motixovelubebov.weebly.com/uploads/1/3/6/0/136085904/fuduvad_zigafoni_xibalotikapikop.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393483/normal_600c9be30b5cd.pdfIn PDF document text
    • https://luxaxezasu.weebly.com/uploads/1/3/1/3/131398230/f6e0a6214f49.pdfIn PDF document text
    • https://divowugu.weebly.com/uploads/1/3/6/0/136022164/zokejor_wibawuxusuko.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419851/normal_600da09939df5.pdfIn PDF document text
    • https://bizekexejanagiv.weebly.com/uploads/1/3/4/5/134593847/zopibates-ludasekojukuba.pdfIn PDF document text
    • http://pmaider.com/palawarusomuxoka7yra5.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/gulapore/91492877385.pdfIn PDF document text
    • https://s3.amazonaws.com/miwolezedubujoz/broadcaster_pro_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/xowasosuf/jigsaw_reading_strategy_template.pdfIn PDF document text
    • https://s3.amazonaws.com/tubukeganuji/sewage_treatment_ppt.pdfIn PDF document text
    • http://rabibunipidozok.epizy.com/happy_birthday_image_for_lover.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_off00010ae7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AE7 5428 bytes
SHA-256: 9d7c18b5d16243fc90765b1b0f8ea22ae7954e7342254985da910ae29552923f
font_01_sfnt_off00011d46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D46 11236 bytes
SHA-256: f8a2c69690f17b798e25afd220e3b7b41af255abb57e75a4767507739157a51d