Malicious PDF — malware analysis report

Static analysis result for SHA-256 fed37e6798c7ff6a…

MALICIOUS

PDF

77.5 KB Created: 2020-11-23 18:27:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: cdae15f2c43045eb954f35d19e3228ed SHA-1: 34416b534e3753c4f54fdd5672fa3d3b2a3fc024 SHA-256: fed37e6798c7ff6acdcc1718125041776deb22ffe805f896c108fd1a50b16855
156 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. The PDF contains a large number of external links, suggesting it's part of a link farm or SEO manipulation scheme. One of the embedded URLs, 'https://trafftec.ru/123?utm_term=is+peanut+butter+ok+for+diabetics+to+eat', is directly referenced by a heuristic, and another, 'https://kuguzozivef.weebly.com/uploads/1/3/0/7/130739994/1697005.pdf', is highlighted as the first URL in a detected link farm.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafftec.ru/123?utm_term=is+peanut+butter+ok+for+diabetics+to+eat PDF link annotation
    • https://kuguzozivef.weebly.com/uploads/1/3/0/7/130739994/1697005.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367687/normal_5f893deb93698.pdfIn PDF document text
    • https://tevirilozarenov.weebly.com/uploads/1/3/2/6/132695732/pogizigafi-lelapez.pdfIn PDF document text
    • https://jerewetazawupej.weebly.com/uploads/1/3/4/3/134384555/6011164.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410004/normal_5f998c0ed87f8.pdfIn PDF document text
    • https://zuwumepegowivos.weebly.com/uploads/1/3/1/0/131069935/vetuwexirara.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/leguvefu/zanaridopudoxege.pdfIn PDF document text
    • https://s3.amazonaws.com/midaguvimabof/47317124650.pdfIn PDF document text
    • https://s3.amazonaws.com/nowokil/83836697369.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5841a0e7-ec30-441e-84e6-74ffb801f686/southport_ferry_schedule_2020.pdfIn PDF document text
    • https://s3.amazonaws.com/ronatiduzoxij/wudesetolusanoduzad.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d48a4cba-278b-43e7-8e07-5240c49835d6/one_year_bible_online_july.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5df53ee6-4773-4884-bdb5-30e9a4885cf0/52706891967.pdfIn PDF document text
    • https://s3.amazonaws.com/dujepav/patapoxaro.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_off0000e557.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE557 5140 bytes
SHA-256: 79e79503c3dac04f06c3419d45deea43bc85e5ac8e45c0410b14c856f15a53ea
font_01_sfnt_off0000f6ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6CE 10624 bytes
SHA-256: 749eef66133be9d9b64f45b00f8d07e11eb565636c77388e7baa9b26420adc0e
font_02_sfnt_off00011abf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11ABF 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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