Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e67bc0c4dd67fca…

MALICIOUS

PDF

54.2 KB Created: 2020-11-03 06:26:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 70e1f9521406f8e56fc26a1c695f5d97 SHA-1: db1218a0602e46915b7e9912cca6d4abfbc37844 SHA-256: 7e67bc0c4dd67fcae9e5cea50e74444f48f2c09e0ee26a04c2a3620443df3200
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains numerous embedded links, with a critical heuristic identifying it as a malicious redirector and a link farm. The primary malicious URL, 'https://cctraff.ru/123?keyword=american+airlines+fleet+2018', is designed to redirect users to potentially harmful content. The document body, though heavily obfuscated, also contains this URL, suggesting an attempt to disguise malicious activity within seemingly legitimate 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://cctraff.ru/123?keyword=american+airlines+fleet+2018 In PDF document text
    • https://soguleta.weebly.com/uploads/1/3/4/3/134305846/tazosalurufonol_gutit_nigupujakewogo.pdfIn PDF document text
    • https://papunagaku.weebly.com/uploads/1/3/1/3/131384156/6a3e1d716.pdfIn PDF document text
    • https://rozolabo.weebly.com/uploads/1/3/0/8/130814594/2867588.pdfIn PDF document text
    • https://reredutubonuki.weebly.com/uploads/1/3/0/7/130775370/1584998.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/013ca4a5-ac6c-46ba-9163-570d1f1b37fc/2077239983.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ab29bf2a-ac7b-4ad4-a213-f24f3a387294/diesel_manual_trucks_for_sale.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0492/4119/4652/files/grape_sherbet_poem_analysis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9df4dc10-67b1-4e4a-b22a-012e1b2d4a4d/17694601923.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bbd947be-0bbc-44a4-bbd0-19655fc3e62a/avaliao_de_ciencias_7_ano_classifi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/7952/7321/files/strength_of_material_ss_bhavikatti.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b6fb5eb0-7a3e-4a9f-93d2-811840ce9e3d/jixoli.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5c517953-ceb9-4623-9d40-999f9ebc05b6/jolowevinonidujusexov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0506/6502/9819/files/pawn_shop_prices_for_xbox_360.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/6225/4488/files/finite_mathematics_13th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/3167/0179/files/zelasonobatiwiminije.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/0436/9319/files/vilifepomupas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1651/8805/files/81003858414.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007cf7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CF7 5216 bytes
SHA-256: af16f2e26351e340a321c7e7c9e1aa611d3a8ffcae3465e6c72f4f1746ec9e11
font_01_sfnt_off00008e77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E77 1800 bytes
SHA-256: a36eee06fef6ce219692c4ec918276ac99413e4fd1e3666e4031624f9289d620
font_02_sfnt_off00009704.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9704 11448 bytes
SHA-256: 81eb46be6e63e701a16ac355b405b097f634beb2887db2f1d7d6df3462e3c4ab
font_03_sfnt_off0000bd26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBD26 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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