Malicious PDF — malware analysis report

Static analysis result for SHA-256 61928a35b1df0851…

MALICIOUS

PDF

41.6 KB Created: 2020-11-07 21:35:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: ae67c8a80782190a687c044476ccbef7 SHA-1: 2868db1fae3e0616ef8dcaf81025fe6c40b495ad SHA-256: 61928a35b1df085119281be474567ca90cad654cdd97f381a81383e92c069cc0
94 Risk Score

Malware Insights

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

The PDF contains a link disguised as a manual for a car seat, which redirects to a known malicious domain. This indicates a phishing or redirection attack, likely intended to lead the user to a malicious site or download further malware. No scripts were extracted, but the presence of a malicious redirector is a strong indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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://traffmen.ru/123?keyword=graco+4ever+car+seat+manual In PDF document text
    • https://cdn-cms.f-static.net/uploads/4467573/normal_5fa48e657dc83.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378599/normal_5f91ecbbefb34.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/zuxadol/bangla_calendar_2016_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b31ca1ca-2f40-4d36-82eb-5dd791a05caa/pozulapifala.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/78229c5a-6261-4799-8822-a5fb13ef9cda/4051923578.pdfIn PDF document text
    • https://s3.amazonaws.com/mubemutolewe/70495081067.pdfIn PDF document text
    • https://s3.amazonaws.com/vonuxagupeduze/bose_acoustimass_6_series_iii_cables.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3e6cff8f-efd6-49ff-8f10-a3fe2685d512/xiguvaduloruw.pdfIn PDF document text
    • https://s3.amazonaws.com/joterige/keepsafe_photo_vault_pro_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ea6f6f06-286b-4814-a435-3a408e03fed8/mlp_oc_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/gavexilatuvitaz/bratstvo_crnog_bodea_13.pdfIn PDF document text
    • https://s3.amazonaws.com/sugaguxagu/anemia_perniciosa_diagnstico.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_off000064f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64F9 5124 bytes
SHA-256: 5949edcda9ebfceb98ef7d51ad835d385378549178bf2915d5bfbe57938ee3bd
font_01_sfnt_off00007661.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7661 10488 bytes
SHA-256: 972fbae51bbf1b66bb4ca25079ad73b67033d82364d76930733b868c172b54e9

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