Malicious PDF — malware analysis report

Static analysis result for SHA-256 64d35da9b58aad25…

MALICIOUS

PDF

84.7 KB Created: 2021-03-06 23:15:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 76345dd287f78b530612a2e031c42685 SHA-1: 9a85af4aa1c48e544fcf44c808af161644145b3a SHA-256: 64d35da9b58aad25b5f70a11756316b4f063bbec6c6bd877c29a2dd426a6fbf5
86 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by an ML classifier. It uses a callback-phone (TOAD) lure. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://botokaw.ru/123?utm_term=panasonic+toughbook+cf+53+specs PDF link annotation
    • http://senorifeg.iblogger.org/22541320644.pdfIn PDF document text
    • http://operationhomeplate.com/nalerazedon7d.pdfIn PDF document text
    • http://fegovoze.22web.org/action_camera_software.pdfIn PDF document text
    • http://lubevos.scienceontheweb.net/hunger_games_book_set_big_w.pdfIn PDF document text
    • http://suzamakulamuj.mypressonline.com/what_am_i_poems_for_students.pdfIn PDF document text
    • http://fuckfrsky.com/66859152565x3yv1.pdfIn PDF document text
    • http://sosabuso.22web.org/15359227840.pdfIn PDF document text
    • http://wersita.fun/28000038936vknn8.pdfIn PDF document text
    • http://xojuxelase.medianewsonline.com/gekodawewavovaxil.pdfIn PDF document text
    • http://wiinorama.space/4288631286cp5bn.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/baxunaf/zatasulupefidazov.pdfIn PDF document text
    • http://japotegalavig.epizy.com/convert_list_to_string_array_android.pdfIn PDF document text
    • https://51fd5013-30c4-43d1-89ce-86564632a3b5.filesusr.com/ugd/9f06f8_5edd21867dc74fb28ea55a6be8b4c778.pdf?index=trueIn PDF document text
    • https://a72b158e-cead-41d6-a0b3-8518216316a4.filesusr.com/ugd/35c6e2_73850f40e85e43979cd0d8f4897758b8.pdf?index=trueIn PDF document text
    • http://palexibibiw.atwebpages.com/6563353796.pdfIn PDF document text
    • https://b7e73dfe-ad35-4791-b4f7-7500f5b7882c.filesusr.com/ugd/bc79a4_6fe8c61e06114dc497fedd62d80aab83.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/mokamoba/menigasiwu.pdfIn PDF document text
    • https://7ef7ebf0-bcb0-4ca2-8538-5a19c3e9f01c.filesusr.com/ugd/aff7ca_1d43f40672644641b53b7a016f97cf7d.pdf?index=trueIn 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_off00010bfc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BFC 5640 bytes
SHA-256: e0571478640b0cee45c8dd1d00712c4311a85d54de44b9acfa9ff0fe2c99476f
font_01_sfnt_off00011f37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F37 11540 bytes
SHA-256: 0c5a6282db258b27d42243e2d9c183fcbb29eb33ff814a1e4838a4b66348dde6

Open this report in the interactive analyzer, or submit your own file for analysis.