Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e71e270b9045616…

MALICIOUS

PDF

41.8 KB Created: 2020-10-26 04:45:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: c4d31b41045ea70f41a28bbb6a4e31cf SHA-1: a35b46a49c6d2bb741194f87dbd8346b77ef7c4a SHA-256: 2e71e270b90456165227034380aaa9d72fb39d424c5ef561c1b6b277742901bb
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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://ttraff.me/123?keyword=importance+of+technology+in+banking+pdf In PDF document text
    • https://lokixesope.weebly.com/uploads/1/3/1/6/131607163/koxevijediri_lebufevolikada_puzufibogijosa_getipakov.pdfIn PDF document text
    • https://ziripovopibew.weebly.com/uploads/1/3/0/8/130874468/zigol.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off000062c9.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off000062c9.bin)
    • https://uploads.strikinglycdn.com/files/f65e93e3-7b29-4a98-b193-734d2640506b/mufep.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f13691f9-6fd8-4e4f-93b2-5329d2bbfe34/kuwulavuximeb.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d35fe980-b987-4738-a8ce-a6f6504f37cc/62054600632.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0092cd62-5584-4b17-95fc-1325b7264fa7/bosquejos_de_sermones_bautistas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6444/9431/files/major_works_data_sheet_1984.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0506/6788/0635/files/reproduction_in_plants_class_12_hsc.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/5421/7388/files/followers_assistant_app_apk_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0225/5770/files/murray_24_inch_riding_mower_parts.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/5936/2973/files/44165060582.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/8309/3910/files/matter_analogies_worksheet_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/xebuvuwov/ftii_question_papers_acting.pdfIn PDF document text
    • https://s3.amazonaws.com/leributafa/applescript_print_email_to.pdfIn PDF document text
    • https://s3.amazonaws.com/zaxawetawupo/vuterinekij.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/00626c57-cbe5-4c10-9452-1a5e4e1cd51f/fudotof.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/32d00961-d80f-4fa8-a017-fb282381f4cb/buworuxume.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 extracted file (font_00_sfnt_off000062c9.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000062c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62C9 5632 bytes
SHA-256: 66267084a0eed67b85420396b0c3f0a195a85274c1970dee3736d7df11a97c94
font_01_sfnt_off000075b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75B6 10776 bytes
SHA-256: 203448d6e7e595b3b84eed373dd1cea86bd0fd70dc8188ada0a4b91fc6fbf056