Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1e45840e441bb84…

MALICIOUS

PDF

47.3 KB Created: 2020-10-25 06:50:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 7419166efc847ddd057af81b925c5bef SHA-1: 920b71e648ff62ec389934d7993740c44bf4ee7b SHA-256: f1e45840e441bb848368209deaa733c30e2979fb7deeead936f5f88d03400050
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/pify?keyword=descriptive+qualitative+research+design+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4379971/normal_5f8bc33b90ef4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368972/normal_5f8ffb38a7234.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405641/normal_5f94513d7d642.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383929/normal_5f8ef9b126693.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/tadovu/11489257807.pdfIn PDF document text
    • https://s3.amazonaws.com/panokojol/cendrars_la_main_coupe.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files/rufasazi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0495/9931/6131/files/12_powerful_words_song.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/fafidakuvuni.pdfIn PDF document text
    • https://s3.amazonaws.com/wexoteluwag/valikekavefalawoleli.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/repule.pdfIn PDF document text
    • https://s3.amazonaws.com/xifabilejilab/bible_contradictions_explained.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0815aec5-9fb8-4173-8011-9f4a3d523840/tupperware_mini_rice_cooker_instructions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1225ae8a-73b3-40fd-99ca-8c990fb9121e/xufikaxivivogejesesewumav.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d4deac7f-4752-47af-9c63-751d5d058ea5/fusigurikukiwowol.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/60b6ed5a-07c7-4914-a219-64e859d6040a/turnigy_accucel_6_80w.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0492/2844/7900/files/xotewebi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6502/4416/files/xirosexaseso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/5207/5681/files/41770803178.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/9462/0333/files/false_cognates_list_english_spanish.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/4714/7427/files/73550732134.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_off000079a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79A6 5604 bytes
SHA-256: 60b72f7f617c262ef6f1c6a9f6430e7a6cb6e90d937cf1c6d2f10eb6ff2708b6
font_01_sfnt_off00008cb3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CB3 10164 bytes
SHA-256: 1f3d15ed8d9439e13edd6d4bcee65e6cac50585db43fdcc66b3a439096c20d1c