Malicious PDF — malware analysis report

Static analysis result for SHA-256 612a61fdebec306e…

MALICIOUS

PDF

45.7 KB Created: 2020-10-28 23:26:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01
MD5: d2a219e31b91f396f595006569503f73 SHA-1: 84885abfbb6b53494acc079d7f30d6778a36db3f SHA-256: 612a61fdebec306eaba45c169196dec21906245f1b972377f446b0196408df68
184 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.
  • 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.me/123?keyword=one+direction+you+and+i+lyrics+meaning In PDF document text
    • https://digafixi.weebly.com/uploads/1/3/0/7/130776371/xoxefage-wubawofa-xenopumizowu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369138/normal_5f8d36f49d713.pdfIn PDF document text
    • https://xedaliwim.weebly.com/uploads/1/3/1/4/131454603/depawozimagunukuzina.pdfIn PDF document text
    • https://tuwijojax.weebly.com/uploads/1/3/4/4/134477229/padapexuru.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378160/normal_5f8bd585da0c5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366961/normal_5f884836e9dc7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371524/normal_5f97e1a479eaa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387589/normal_5f952cba3f7f7.pdfIn PDF document text
    • https://dokodajibebabek.weebly.com/uploads/1/3/2/3/132302773/5124095.pdfIn PDF document text
    • https://mijisurux.weebly.com/uploads/1/3/1/0/131070147/balatifi-birit.pdfIn PDF document text
    • https://tizukusijevawus.weebly.com/uploads/1/3/4/4/134454617/tewonok-xexibul-vikemezomifun.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408984/normal_5f988da786f85.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379034/normal_5f8db534c700c.pdfIn PDF document text
    • https://zoxuzuxebexot.weebly.com/uploads/1/3/0/9/130969059/7989682.pdfIn PDF document text
    • https://siveruvamavekug.weebly.com/uploads/1/3/4/2/134266289/kiligakopot.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/102130c2-7750-491e-a749-374fda465c7c/sowevikabetogukewofukuli.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/68200b7c-6df1-4bf9-840f-25c94910739e/29248083063.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d6ad1ac0-bfcd-4663-aafd-22d299656864/far_cry_4_interactive_map.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/09b4c5de-5d01-4837-8519-978d5524ec8a/denon_avr-_x3500h_review.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a653db86-8d52-4c67-ab63-40c968709be1/relative_dating_worksheets.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/39b92010-ca38-4369-9fbf-b689194ecdfe/warulomizovelumuba.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b78a6529-73bc-4d03-8b2a-4aa447780d8a/8919855396.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4e2db2c2-9399-4a6f-9e2a-b5f9b26c4f78/vagukede.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/067ff660-1872-496d-990a-2912213bedd6/piwixogexejutuxuxaw.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_off00007180.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7180 5388 bytes
SHA-256: a15892c2e46d3aae9e6221e674886a4d89a701ad67060636627f27a555873ec1
font_01_sfnt_off000083c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83C0 10800 bytes
SHA-256: fe0c34379c1b15484d1723e83d884345295254a129536209db4ea759dfc5b74b