Malicious PDF — malware analysis report

Static analysis result for SHA-256 677c733c57967956…

MALICIOUS

PDF

67.1 KB Created: 2020-11-24 09:26:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: a1f7a857f5cf39e99e0007da8fdd1531 SHA-1: 122d642176395cfb32c36bd232be616ea58073de SHA-256: 677c733c57967956ec50d167e603cfd3be968c3cf7053a5a727205bab5fee8be
214 Risk Score

Malware Insights

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

The PDF contains numerous links to external websites, with one identified as a malicious redirector. The document body, though partially corrupted, suggests a lure related to 'Gravity Falls journal printable pages'. The presence of multiple PDF links and a critical heuristic firing for malicious redirector links indicates a phishing or malware distribution attempt. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://gettraff.ru/strik?utm_term=gravity+falls+journal+3+pages+printable In PDF document text
    • https://janonezofeto.weebly.com/uploads/1/3/4/6/134664798/zulanukunumur.pdfIn PDF document text
    • https://wizawexixif.weebly.com/uploads/1/3/4/4/134472694/38ab77caa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450152/normal_5fb4756e2ae30.pdfIn PDF document text
    • https://bijoxopibomer.weebly.com/uploads/1/3/4/3/134325560/mofudisizavamamatoba.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366354/normal_5fa018636d702.pdfIn PDF document text
    • https://zevigetadafuwun.weebly.com/uploads/1/3/0/9/130969942/melita.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/e765fbce-7f1e-4c51-b75e-d78a1fbd8215/71823779398.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/00fae82c-85bc-403b-a24a-c3ae8a5fe0de/accessory_to_war_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/fizup/agile_methodology_in_testing.pdfIn PDF document text
    • https://s3.amazonaws.com/kovozenamofox/62597688401.pdfIn PDF document text
    • https://s3.amazonaws.com/fikuvine/zojubumifovuzuba.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/46043beb-469f-44a1-aa4c-102376d13542/lorivoweresigopisexibe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/44a702d2-de2f-4c4a-8197-3f2f8f04996a/12670441712.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_off0000c6f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC6F8 5644 bytes
SHA-256: 7bebe959d80b623c5f781d0eb566ab0c46172dfc1f850926e95ffa05f8c53109
font_01_sfnt_off0000da5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA5A 11260 bytes
SHA-256: 42dbe07d37b9e5ead0f215fe6230858e2638767a5d7dfd515d46d4a95cbc5069

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