Malicious PDF — malware analysis report

Static analysis result for SHA-256 02b0c1b9d5ec765a…

MALICIOUS

PDF

42.3 KB Created: 2020-10-29 10:02:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 581577270fb871d274d0e0dc904f74cb SHA-1: c46dc50f2e2bfc21903d53d320ebaa4bdc4a37a9 SHA-256: 02b0c1b9d5ec765a14bb998c8c6e395f832ba5f94f7915f89f278996f217740c
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, which is designed to lead users to malicious content. The document body, though heavily obfuscated, contains the same URL, suggesting it's the primary lure. The PDF also contains a large number of links to other PDFs, indicating it's part of a link farm designed to improve search engine rankings for malicious content.

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.
  • 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.
  • 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://gettraff.ru/strik?keyword=donald+ross+actor+bio In 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/5aee4148-b6e7-4995-acd7-9cb64ac13293/damugefumizamefilidebu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/3340/6871/files/lunofuga.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eeab4633-63e2-4c51-922e-90cdc0f36a24/nofivijuvafoxukuvatoro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/6937/2069/files/sach_noi_phat_giao_nguyen_thuy.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0fa7723e-29d8-4fdb-aa0a-24d19f081fc5/even_odd_functions_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/suximawo/delowitabojoravaru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/4295/3118/files/tangible_vs_intangible_assets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/8234/5376/files/batman_telltale_apk_file.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/949a7654-75c1-4e6b-b890-6a0267fbc060/northanger_abbey_plot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/9508/0135/files/xulum.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/56f46275-d41c-4996-8448-357fee4a929b/77580385236.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4745/1798/files/liguziwupivufodirujas.pdfIn PDF document text
    • https://s3.amazonaws.com/tadovu/49333797595.pdfIn PDF document text
    • https://s3.amazonaws.com/wusone/79869802884.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/18ae6e55-ad1c-4d87-a27a-9a48de9d3730/tefilizurin.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/623f1a95-e831-47ff-ab5e-231c251c607c/the_art_of_seduction_tips.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/2815/1959/files/foxubodafa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/03bd836c-79cf-4e58-b3ea-8edddca44528/baseball_card_size_template_word.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c4a858df-654d-482e-bb09-7279f81668f9/hisamitsu_significado_de_nomes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/4803/8311/files/tokoderusapekexuziwipawu.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/comparing_fractions_worksheet_with_answers.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_off000066b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66B4 5072 bytes
SHA-256: 58a118f46c265aa2715c6b6526e21246609d48b496c26a511651104e441c7f20
font_01_sfnt_off00007800.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7800 10700 bytes
SHA-256: 359e6c21c3e4d442481e6a148bff6d810bcdad86d41810b2f9b9aad9911ab1b9

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