Malicious PDF — malware analysis report

Static analysis result for SHA-256 e42994c7ef98882c…

MALICIOUS

PDF

65.7 KB Created: 2020-11-04 09:17:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: eb975b6be56fda27dbce562acd56d2a1 SHA-1: d721b3d7aeffe8d4d034fdde544e6c61f708cdf2 SHA-256: e42994c7ef98882c0c3687551d61b71d2e34be649b17035718be240d62b76623
114 Risk Score
Tags
free-cdn-ebook-manual-lure

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 routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

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.
  • 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.
  • 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/strik?keyword=kw+v20bt+manual In PDF document text
    • https://cdn-cms.f-static.net/uploads/4463034/normal_5fa1bde1aafd6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412592/normal_5fa1ec5be676c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367286/normal_5f8abe8f1fa0e.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/c4853d41-b494-4394-adfa-fc0ab19eb417/bivizitavumisiz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ab60f315-901a-4120-b961-33853a67bfac/pudujuki.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2645582e-6618-4928-a16e-9647bc2bd405/progonol_cream_reviews.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9e3be81b-03b9-41ec-bb0c-e8513f64e08d/mountain_crest_high_school.pdfIn PDF document text
    • https://s3.amazonaws.com/rimepusox/91196360360.pdfIn PDF document text
    • https://s3.amazonaws.com/mijedusovineti/definicion_de_capitalismo_segun_autores.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/193ec79c-95fe-402d-a718-51da5f6946b9/hydro_quip_hot_tub_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/niporofez/jogew.pdfIn PDF document text
    • https://s3.amazonaws.com/mawesenasijoser/acura_tsx_wagon_manual_transmission_swap.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9e136cd5-ee96-4144-b406-e2e6ec011f1f/68840236460.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c158.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC158 5092 bytes
SHA-256: 4fd0837a293b0dc99709a3381181cec4feca7d04e1327dd1c1b062718bbc209b
font_01_sfnt_off0000d2b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2B3 11800 bytes
SHA-256: 3dbb29313e5439f3a29b2805d00c22d53a4107d263abd3768a55e46ff0da5fb8

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