Malicious PDF — malware analysis report

Static analysis result for SHA-256 150b677999508a3d…

MALICIOUS

PDF

43.7 KB Created: 2020-10-27 14:23:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 0038b49ae893f08d3cc2698669f711de SHA-1: 89874593431b884c1522b85f955ae4a67ac1ef6d SHA-256: 150b677999508a3daee9a9eb58a2ecf94eec7db585da31b214c65d7aa97d85f7
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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://ttraff.link/123?keyword=1400+things+to+be+happy+about+pdf In PDF document text
    • https://desaviguwogo.weebly.com/uploads/1/3/1/8/131871994/862f4.pdfIn PDF document text
    • https://zavomafig.weebly.com/uploads/1/3/4/3/134356936/c6de7388a.pdfIn PDF document text
    • https://junoxavod.weebly.com/uploads/1/3/1/3/131384771/rogujetonajarod.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off000069de.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off000069de.bin)
    • https://uploads.strikinglycdn.com/files/31eb769a-3d34-4112-82f3-fc6600333eef/download_trinity_rescue_kit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fa023d1f-f560-4c9c-a1f8-aa679a1eb7c4/77386500079.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d3ee27eb-8cb6-4d7c-9007-8f22eaa29cf2/xatanadevozuvewudumewewim.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b2c6efd9-5083-4d61-a85e-fec7d3549f20/fitufavelo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/26832625-e7bb-42c3-a07e-313fdacd2602/vmware_workstation_12_key_crack_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4eef7d3b-ad46-469e-8bee-e751ce15c5ee/34471210911.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f14cb277-4740-4af8-9062-6c481bce703d/78066263192.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ed617443-2a75-4d0b-9dfc-1439052f2b5b/balcony_scene_romeo_and_juliet_sheet_music.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c18f4d4d-1311-4482-8a30-8003f91b0f51/12888726095.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c8b98279-6151-4f8c-89ab-68b155fc8ae3/circuit_simulator_mac.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b748bd04-c2ab-4171-b685-ca9fa76ec56f/enem_2008_torno_a_ver_vos__montes_o_destino.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/1062/8008/files/what_is_a_come_along_clause.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2302/2752/files/netflix_app_download_location_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/7255/2601/files/18714551353.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4672/2965/files/fikotujirorexavumaposazi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3296/1439/files/hackers_game_mod_apk_1.208.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8265/4919/files/franklin_road_christian_school_reviews.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/7073/2456/files/conditional_sentences_worksheet_for_grade_8.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_off000069de.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000069de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69DE 5604 bytes
SHA-256: 54481e8210f0923a919d5a318b531567c4218b418b3eee2c1392da5feff2613e
font_01_sfnt_off00007cf2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CF2 10852 bytes
SHA-256: c98ec812d9f98484ec7ae7060003e6c7024d9eb073412022cae049ddd30e067c