Malicious PDF — malware analysis report

Static analysis result for SHA-256 f103cea625b13601…

MALICIOUS

PDF

67.2 KB Created: 2021-02-28 05:11:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 3544a61b3efe0ea576ca9e0ab7764f14 SHA-1: 62a04549aaecb4c7a3a53ef53651f6f69f6c9eb5 SHA-256: f103cea625b136017684ac44e4a74615ef573a7e5ba115a5001ebfbeee223703
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://gimoguvi.ru/wix?keyword=defend+your+nuts+2+hacked+infinite+ammo PDF link annotation
    • http://microbladingeyebrowsdallastx.com/896470057714lblq.pdfIn PDF document text
    • https://kofovozeregom.weebly.com/uploads/1/3/4/3/134313602/wagexobulove.pdfIn PDF document text
    • http://fruit-italy.space/my_chicken_virtual_pet_apk_mod0op11.pdfIn PDF document text
    • https://cdn.sqhk.co/fuvebopeweb/egggf8q/tekukimetulunaruvepoguf.pdfIn PDF document text
    • https://nobewiga.weebly.com/uploads/1/3/5/3/135315034/nejowo-mujimadi-samuduwiwabare.pdfIn PDF document text
    • https://cdn.sqhk.co/tavikagisato/Ijdvhcc/zelle_app_chase_to_bank_of_america.pdfIn PDF document text
    • https://cdn.sqhk.co/lewovazu/gcicij1/orbital_strike_planetside_2_ps4.pdfIn PDF document text
    • http://grigolia-studio.ru/ranirumohp2mc.pdfIn PDF document text
    • https://cdn.sqhk.co/gudijupimeb/8D0Zghd/4_pics_1_word_8_letters_bonus_puzzle.pdfIn PDF document text
    • http://agreevudb.rest/big_ideas_math_algebra_textbook04hy4.pdfIn PDF document text
    • https://wulakeda.weebly.com/uploads/1/3/4/5/134592464/228970.pdfIn PDF document text
    • https://cdn.sqhk.co/dinigivo/s8ZYibU/future_farming_simulator_2019_tractor_driver.pdfIn PDF document text
    • https://gerudupox.weebly.com/uploads/1/3/2/7/132712596/740011.pdfIn PDF document text
    • https://cdn.sqhk.co/sepagumal/ghiQmSG/28044900643.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/fedojigudaj/multiplying_decimals_word_problems_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/mejobu/best_android_anime_streaming_app_reddit.pdfIn PDF document text
    • https://s3.amazonaws.com/mamukawaxatali/96218947347.pdfIn PDF document text
    • https://s3.amazonaws.com/labitajaxatufib/2919715085.pdfIn PDF document text
    • https://s3.amazonaws.com/dazifozixawus/jiveleba.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_off0000c9d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9D3 5524 bytes
SHA-256: a1cf3bd24774e23dbf6a451cfcb53aff542282831e591fd82879f5e38453fe61
font_01_sfnt_off0000dc89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC89 10252 bytes
SHA-256: a4844c5703d0ed069c89095d7abfc5daabec23078ec9f4d7ec1e6d32de1dd454

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