Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb0b59959c64b8e5…

MALICIOUS

PDF

51.0 KB Created: 2020-10-16 03:06:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 157756f636b0eba90e97c893fcd3d54a SHA-1: dc40444dc2ac7c6a4510423c327c9802687f5b99 SHA-256: bb0b59959c64b8e52e5edb0b25ae1cd57170934cbd6a2bbd2a77f641415a2509
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, many of which point to disposable hosting and a known malicious redirector. The primary malicious URL identified is https://ttraff.club/pify?keyword=bantay+ng+computer+shop+complete+pdf, which is flagged as a malicious redirector. The document's structure suggests it's designed to lure users into clicking these links, potentially leading them to malicious content or further compromise.

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.club/pify?keyword=bantay+ng+computer+shop+complete+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4365642/normal_5f88ca1fdd4f6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366017/normal_5f8863d55118f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365580/normal_5f875b02e4001.pdfIn PDF document text
    • https://damijuvik.weebly.com/uploads/1/3/1/3/131381376/973a38457.pdfIn PDF document text
    • https://fijojonibiw.weebly.com/uploads/1/3/2/6/132681787/5058540.pdfIn PDF document text
    • https://zoxuzuxebexot.weebly.com/uploads/1/3/0/9/130969059/metor.pdfIn PDF document text
    • https://mamexobupelo.weebly.com/uploads/1/3/1/3/131383482/5123699.pdfIn PDF document text
    • https://jewajufigojoxi.weebly.com/uploads/1/3/1/4/131438211/2823545.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/7915/8948/files/maimonides_the_guide_of_the_perplexed_sparknotes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/0321/5778/files/gas_pipe_sizing_chart_2_psi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8750/4583/files/nasa_rocket_science.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/4724/6760/files/bunn_ultra_2_recipes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/0588/1763/files/what_do_darth_vader_means.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/9689/4357/files/jumux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0492/4515/9580/files/68107077831.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4161/8082/files/rechnung_schreiben_muster_selbststndig.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/71ad1d2f-0365-4e0d-bd33-62b001431a94/72668920105.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/86ea684f-9aea-4504-a374-d3285395be18/rowatofirez.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/abe3a883-2376-476b-9a27-1d37a950cf45/60144587994.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/98fa5049-bb8c-45a3-ab25-4f0a7d9eb9aa/38020113352.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7ab30c63-8d7f-41e4-8e8e-c08774fe23ce/84509271218.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0493da40-2a5c-4278-91e9-1c217381b3cb/85044536391.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/72a44a5c-401b-4f72-b3ef-46bf24dbb830/sokadupibulojedasunujoro.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/06dbc908-aba6-4d31-8302-074442abaacb/majinopoze.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bc1b6b17-fe7b-455a-ae80-83f030b169a0/71223640242.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/036c1e30-002c-4d55-a1b3-8b713247f703/88555426021.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_off00008615.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8615 5720 bytes
SHA-256: 2b86634aca992348aa97c4764ac2af57548467a84ee52d06f4a86183a7a9e232
font_01_sfnt_off0000995c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x995C 10928 bytes
SHA-256: 690f826b84399f085f46c9823621c628762eb87ddf71c6cc8c9c58879863e6b3

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