Malicious PDF — malware analysis report

Static analysis result for SHA-256 074c50bea86c1114…

MALICIOUS

PDF

37.4 KB Created: 2020-10-03 21:47:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: ccfca8524678addf669d40b40626780b SHA-1: 0816cfdf6cbc99cabf038bb5cfba02a548869445 SHA-256: 074c50bea86c1114a2f300e8468883b15d3507aa510a3ccfae27a52215f5515b
154 Risk Score

Malware Insights

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

This PDF file contains a large number of embedded links, with one identified as a known malicious redirector. The document body itself is heavily obfuscated and appears to contain the malicious URL. The primary goal seems to be directing users to malicious infrastructure, potentially for phishing or malware distribution. No scripts were extracted, but the presence of numerous links suggests an attempt to leverage SEO poisoning or similar techniques.

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://cctraff.ru/strik?keyword=jo+achyutananda+song In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1636/2904/files/rio_hondo_college_jobs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6282/0005/files/lee_reloading_kit_academy.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0470/5989/4440/files/tidixexugujagubuxojijom.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/93c8be9f-f624-4b86-95f0-37e8b3396f9e/42954353904.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6ccae21c-5591-4a90-a813-03f661e5e74f/wamefovekel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0b9c30dd-1347-49f0-bb2d-20fc09489f86/zigakivofutexaze.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/72268cb4-f6be-421a-9d81-5ae3d2b7feb5/xewititujibuv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/316c91ae-fc35-4d31-b888-3423e192f49e/filipijodewokiladogan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4faa07b3-2873-479f-a86c-67a2add9ce38/kuvopu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ea7c2a00-0414-4904-9ee7-b7d8295adb8f/16518207518.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5f5f7f6a-4984-4fd6-a43f-cd9c9c2cc306/30621838542.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_off00004b23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4B23 5164 bytes
SHA-256: 69565997911b34ea002ec7b50f0b6be79e0f97a95e347f752097cfe1fd78dc30
font_01_sfnt_off00005cba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CBA 14504 bytes
SHA-256: e3c4bbd30da630c51dd6d8e61ada27e64571ad8f641ca0214de0748f26981a4b

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