Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc70b4cc8fb53fed…

MALICIOUS

PDF

42.2 KB Created: 2020-10-28 21:17:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 75efb89084bc188eabd8f3421252a653 SHA-1: d6fbcfc61b0d4312c224220eb2051a6e2e82c867 SHA-256: dc70b4cc8fb53fede20d92189722028607999b95581b56532a6299bb13293c4e
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.com/pify?keyword=pixel+car+racer+apk+data+unlimited+money In PDF document text
    • https://tumixivig.weebly.com/uploads/1/3/1/6/131636813/9817343.pdfIn PDF document text
    • https://lozulijulejibog.weebly.com/uploads/1/3/1/8/131857057/namotazunejuz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366040/normal_5f8734e549ec0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367301/normal_5f90b1a6a27fb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371495/normal_5f8a12741d8dc.pdfIn PDF document text
    • https://natizupasa.weebly.com/uploads/1/3/1/4/131437725/tanejagife-zogozobogix-dazedareraxugem.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370267/normal_5f8b567af3585.pdfIn PDF document text
    • https://kavafarosodox.weebly.com/uploads/1/3/4/0/134097584/tiriga.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403407/normal_5f95dab397fe2.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/0cbd7f35736ab.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/fedufiporara/core_java_sample_programs_for_practice.pdfIn PDF document text
    • https://s3.amazonaws.com/wujapu/english_speaking_course_in_hindi_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0210ee4f-8570-407b-ab41-f0cef45142b6/jamagulijekopetus.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/06c35952-39e6-404f-b2a1-365f01c64d0b/10_cl_en_litre.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/2578/7812/files/88925973356.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f186cc7f-d89f-47bf-b2dc-85f7762b3dbe/baby_driver_theater.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/17568872553.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2b2a4db7-1b47-4066-9845-65d8440397d7/pc_link_ps_vita.pdfIn PDF document text
    • https://s3.amazonaws.com/memul/37688788313.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a796a85e-9051-43dc-abbe-5ae8ae45d07f/kixezesemetena.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/718c577a-4109-4608-b4a0-86e22cb70727/voles.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/70683f39-a48e-45a7-b41e-a634d5d7e4d3/xifedodisiperujiw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f013ee0b-8943-48d7-b59d-bc694e198433/pakumevelokanetuzi.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_off00006794.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6794 5276 bytes
SHA-256: d657bee18a7374a4797adb2bd89ab496530d341ada78d8ebd945d9376a8338bc
font_01_sfnt_off00007980.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7980 9836 bytes
SHA-256: a4e5e8c93a03325f4dcb179af7eb98a0dc25ef147121b4f28b8a10cc25be6f4f