Malicious PDF — malware analysis report

Static analysis result for SHA-256 60779f40b7da24d6…

MALICIOUS

PDF

70.8 KB Created: 2021-02-18 14:44:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 4f4d7b931b7b0905bdcee185157205c5 SHA-1: 580c5d20353e019f212ac0cbbfa89579e3838091 SHA-256: 60779f40b7da24d65e709d58b10703a8a1439345e6cffee43fe491c3d3c1af39
254 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
  • 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://crophysi.ru/123?utm_term=what+are+the+project+topics+in+seminar In PDF document text
    • https://rudofodirofebas.weebly.com/uploads/1/3/0/7/130739781/3181551.pdfIn PDF document text
    • https://cdn.sqhk.co/dasewugiru/xKhgcjj/100_cool_games_unblocked_online.pdfIn PDF document text
    • https://juguzitusiketi.weebly.com/uploads/1/3/4/3/134372303/c752102805.pdfIn PDF document text
    • https://cdn.sqhk.co/miweguzeg/nhjjgoP/60831935966.pdfIn PDF document text
    • https://safuziketuxoxu.weebly.com/uploads/1/3/0/8/130814855/6ec8d2d5a989.pdfIn PDF document text
    • https://cdn.sqhk.co/zokasejiz/LwI9gfZ/fuvuxobasizibafazip.pdfIn PDF document text
    • https://cdn.sqhk.co/bamopilu/fiiJgjU/mindshift_backlight_26l_review.pdfIn PDF document text
    • https://lemidedimiba.weebly.com/uploads/1/3/0/8/130874299/be1f15e.pdfIn PDF document text
    • https://lizodeva.weebly.com/uploads/1/3/5/3/135342900/4131537.pdfIn PDF document text
    • http://kifikawi.66ghz.com/bibukolus.pdfIn PDF document text
    • https://cdn.sqhk.co/woxemevimox/g4ijhgM/fall_of_the_western_roman_empire_map.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/dudigonifu/byte_of_python_free.pdfIn PDF document text
    • https://s3.amazonaws.com/vonuxagupeduze/word_game_answer_4_letters.pdfIn PDF document text
    • https://s3.amazonaws.com/foneniz/can_you_share_a_on_fb_messenger.pdfIn PDF document text
    • https://s3.amazonaws.com/povodijirig/88437909437.pdfIn PDF document text
    • https://s3.amazonaws.com/viwoxuz/android_wear_iphone_battery.pdfIn PDF document text
    • https://s3.amazonaws.com/simujix/hallelujah_piano_sheet_easy_free.pdfIn PDF document text
    • https://s3.amazonaws.com/wegemebufojafak/impossible_quiz_answers_question_45.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_off0000d768.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD768 5232 bytes
SHA-256: a575ebd52c36ebeb3e9a02bbca81e9cf291fdf34121541ad027f2af6cdda7b2f
font_01_sfnt_off0000e918.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE918 11212 bytes
SHA-256: 1ff823182e11b436d12d4cfe2019abcd0116ed2d6e3680d534366fc4aaea9046