Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d4d98eccae28a85…

MALICIOUS

PDF

43.3 KB Created: 2020-11-02 04:10:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: ccec77cc4eaca3342afc03d523f160e4 SHA-1: eef5aef8ae4b01bfdcc310e00459d79ab37922a7 SHA-256: 4d4d98eccae28a8531debfeb1fc09d493cdf03912c9484f43d2f481765098c0d
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged by a machine learning classifier and contains numerous embedded links. One of these links, 'https://ggtraff.ru/pify?keyword=mexico+vs+brasil+2019', points to a known malicious redirector, indicating an attempt to lead the user to a harmful destination. The document also contains a large number of other PDF links, suggesting a link farm or SEO poisoning tactic.

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.
  • 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.
  • 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://ggtraff.ru/pify?keyword=mexico+vs+brasil+2019 In PDF document text
    • https://cdn-cms.f-static.net/uploads/4382423/normal_5f97b977e5520.pdfIn PDF document text
    • https://mogilifus.weebly.com/uploads/1/3/0/7/130739831/5401885.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/846d40af-7a61-465e-bbea-07416e4b6cbd/nodogugufidiwun.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6edb1b37-0fae-463e-b673-62aeda67ebad/bidedadabivesiwimi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8fc2d1b0-ef1f-4a44-92ef-906a71f9d582/59375589939.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ee25ac75-ff73-4e43-a6d6-c4c1fd2eeb0e/dubugisexaj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5c2b163a-39a5-4857-9961-e35616bbfcb8/64742336455.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/62b37af9-6da9-4658-8103-3fe0b3c594ff/kodotiledapigin.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/387a0996-088a-4534-a2a2-00b7c648f440/real_estate_study_guide_nj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/8678/0852/files/american_natural_premium_large_breed_puppy.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7b2c5552-bf19-4b14-b497-ade4684d2a8e/gobofadasavilidita.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005eba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EBA 5548 bytes
SHA-256: 87f0cc3c882f3a3330494c10e9792fcd01c248a19cd4e1810fbab57bdbcb973f
font_01_sfnt_off000071af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71AF 3024 bytes
SHA-256: cf5ed4f450e5fc1fa31c8ac31b5dbd05637a4ba05cdfa332ae769b600578e534
font_02_sfnt_off00007cdd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CDD 10420 bytes
SHA-256: 294dcf46deac688c7b7e5a653cc830b9598944130c19ee12f6c47dcee737a391

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