Malicious PDF — malware analysis report

Static analysis result for SHA-256 057410cea2519438…

MALICIOUS

PDF

76.8 KB Created: 2021-02-23 18:23:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 47c6e82592f71c4473d2a6923c6feb19 SHA-1: b50a860a537591edffbd682e4de858fcc02589fa SHA-256: 057410cea25194389dc9d53399d6e89dba33aa11512d3cf06abc198e3843be10
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/wix?keyword=gendered+worlds+3rd+edition+pdf PDF link annotation
    • http://rofibopuxi.iblogger.org/xolepivebogedekujibup.pdfIn PDF document text
    • https://lasebotoxuxuxir.weebly.com/uploads/1/3/4/7/134729765/fc6aa5c9af9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465127/normal_6007008b8a403.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417222/normal_5fc6c755c6677.pdfIn PDF document text
    • https://cdn.sqhk.co/budajawisore/UNLytha/learn_spanish_offline_speak_spanish_alphabet_video.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422890/normal_5fde11d87435d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422373/normal_5fdefb31a091c.pdfIn PDF document text
    • http://votilabelomebom.iblogger.org/63668612623.pdfIn PDF document text
    • http://kufigada.22web.org/42800375312.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sesugemedolaf.rf.gd/nebizojobano.pdfIn PDF document text
    • http://regipikiwubadov.epizy.com/the_raven_poem_setting.pdfIn PDF document text
    • http://zupibejozoge.rf.gd/sociology_and_you_textbook_glencoe.pdfIn PDF document text
    • http://risatimax.rf.gd/restricted_license_test_guide_nzta.pdfIn PDF document text
    • http://rowesotinik.rf.gd/carpal_tunnel_syndrome_causes.pdfIn PDF document text
    • http://sokurunofizune.rf.gd/xogofijixugo.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_off0000efbe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFBE 5112 bytes
SHA-256: 1d3ccdbb6aebc56d231561966e566fe14696f23279f26d4b313ae35b1e694048
font_01_sfnt_off0001014d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1014D 10856 bytes
SHA-256: ed6bcf7df4253732a92cfe0cb5adbc9a349cf537e45db8136819096753af95be