Malicious PDF — malware analysis report

Static analysis result for SHA-256 014943b139bc83b7…

MALICIOUS

PDF

40.1 KB Created: 2020-11-02 16:14:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 9514293837ac6106159ee9cab953d48d SHA-1: a4ffdfe953d952beb2ac506e8f502c0e3be244b2 SHA-256: 014943b139bc83b7d8cf1589379d0269e7d5b626f3da7e1dca09b4d84f7f3f27
154 Risk Score

Malware Insights

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

This PDF file contains a large number of embedded external links, including one pointing to a known malicious redirector. The ML classifier also flagged this PDF as malicious. The presence of numerous links suggests an attempt to direct users to malicious websites for phishing or malware downloads. No scripts were extracted, but the PDF structure itself facilitates the attack.

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://ttraff.link/123?keyword=zombie+castaways+mod+apk In PDF document text
    • https://tidemipevu.weebly.com/uploads/1/3/0/7/130740592/f47f5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385197/normal_5f9eca7b15f5a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367643/normal_5f93e1e1a928b.pdfIn PDF document text
    • https://jazafojof.weebly.com/uploads/1/3/4/3/134310209/xamobixexon.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/c7f0db0f-5696-4087-a5d0-79c518a44987/95804421970.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1c754a2d-ad80-4b9d-8746-b845c0a94b85/5x4.5_bolt_pattern_in_mm.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bc2dae73-ad6a-4746-bc8f-68e3e04aef57/49108889817.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bdb1f2cd-030d-4a9a-b2cf-9540c1a4538a/motejobazevodogasiv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/048f53a6-a97c-4fe4-98d4-200f841287d5/hale_microtax_06_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5847bfa5-fd25-45fb-82d7-fcfaa3c57e7b/suwikefesabugojenupipolan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dce10094-73e9-4554-ad79-dd46590536a8/2011476390.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/db94aeec-19eb-4e1a-9ae1-bb925e6e9b13/set_associative_cache_optimization_hackerrank.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_off00005d7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D7B 5448 bytes
SHA-256: fece8be43a14101776a0ca7329b3bf78a09f705e24143a33c1b17de4c1a61e46
font_01_sfnt_off0000700c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x700C 10960 bytes
SHA-256: d2e48a1fcc93547ceea51d7799f1254c52abfb212deff36a47b5a2ea1e4d9dc1

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