Malicious PDF — malware analysis report

Static analysis result for SHA-256 57058f8bb8bf662e…

MALICIOUS

PDF

45.2 KB Created: 2020-10-25 16:19:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: d36b01adad70770778e408eb61e1f5fd SHA-1: 8cf3caec7925797c7bffae0d1809cbc7934bac3e SHA-256: 57058f8bb8bf662e10803c2d9eaab50fa8b93cc69f2c2ff92d925225cc5a4d6a
184 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document contains a large number of embedded links, many of which point to disposable hosting services and redirect to a known malicious URL. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/123?keyword=figurative+language+worksheet+6th+grade+pdf', suggesting a lure to disguise malicious activity. The primary function appears to be redirecting users to malicious infrastructure.

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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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.com/123?keyword=figurative+language+worksheet+6th+grade+pdf In PDF document text
    • https://jawasolasazilem.weebly.com/uploads/1/3/1/3/131379174/3722212.pdfIn PDF document text
    • https://jalewigevat.weebly.com/uploads/1/3/2/6/132681207/vuxovemi.pdfIn PDF document text
    • https://zulatikuwa.weebly.com/uploads/1/3/0/7/130776211/3173412.pdfIn PDF document text
    • https://xetutinafo.weebly.com/uploads/1/3/0/7/130775845/zawaxunejamuxisafe.pdfIn PDF document text
    • https://zewubonorow.weebly.com/uploads/1/3/1/3/131398185/rijefagubobok_zujekevubabe_mokibixezo_ziwimifokuja.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/52f99dea-594a-4661-ae99-e6a48beafc19/83088474305.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/08ac1d2f-45a8-4107-bf79-94cecd692549/25765057316.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/41886fcd-c09c-42dc-affc-a8a41a9c8908/bixutiruzejefijuki.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/29c2bd2e-38b7-436f-b10c-4ca5de3eb424/48745465564.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c87d9c88-c184-4b75-a7b7-13c1c478f230/65952404190.pdfIn PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/ziravikiwikuvotegowes.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/atlas_of_anatomy_thieme.pdfIn PDF document text
    • https://s3.amazonaws.com/xezujuxoz/bpt_2nd_year_syllabus.pdfIn PDF document text
    • https://s3.amazonaws.com/tanikanaw/65751977576.pdfIn PDF document text
    • https://s3.amazonaws.com/tapexiw/angielski_swka_a2.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/72322de5-370a-4cb0-bb3f-da0134bbfa08/vedic_palmistry_hast_rekha_shastra.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5a147fdc-3c10-4030-842d-39bcce2f4624/larafolixoxotarugolepiko.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fb7ac47c-fc81-4de4-8f9f-33572851c775/powopipatabukixumise.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b0db5dd4-24fb-4c84-9fc5-8f53222f6ef1/48991002383.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/4479/6078/files/85058243135.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/4902/3145/files/79730777360.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/bopalik.pdfIn PDF document text
    • https://s3.amazonaws.com/lekizopiloref/circulatory_system_grade_8.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files/45756415310.pdfIn PDF document text
    • https://s3.amazonaws.com/mijedusovineti/the_rocking_horse_winner_summary.pdfIn PDF document text
    • https://s3.amazonaws.com/befarekogol/the_affluent_society_book.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_off00007070.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7070 5628 bytes
SHA-256: 09efde9809e1acc6f5533272e837dee44cd1d96cc61d82f788119b6c2e749645
font_01_sfnt_off000083ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83AB 10532 bytes
SHA-256: 1986dea689d011b44fbd55fe2b5ed6ab57862a65d4e7e9c20166883e2d0fed92

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