Malicious PDF — malware analysis report

Static analysis result for SHA-256 8589c0f075b56e6a…

MALICIOUS

PDF

75.4 KB Created: 2020-10-07 05:11:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 89dc0a52e36a31b9603b3c9e2c1691e6 SHA-1: b56a0bb5c988b39c8e1754315bbabe6f57f7fe83 SHA-256: 8589c0f075b56e6abb19821040a1b478d13c1abc3aa13f25801d73fcbbff1d8c
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

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://gettraff.ru/strik?keyword=escala+de+riesgo+de+caidas+neuman In PDF document text
    • https://site-1038835.mozfiles.com/files/1038835/94261688076.pdfIn PDF document text
    • https://site-1041785.mozfiles.com/files/1041785/15245840422.pdfIn PDF document text
    • https://site-1038660.mozfiles.com/files/1038660/27692465903.pdfIn PDF document text
    • https://site-1048442.mozfiles.com/files/1048442/suwafuzagugi.pdfIn PDF document text
    • https://site-1040288.mozfiles.com/files/1040288/milakelalo.pdfIn PDF document text
    • https://site-1036692.mozfiles.com/files/1036692/kupomujowiwekep.pdfIn PDF document text
    • http://fontawesome.iohttp://fontawesome.io/license/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/1/0428/2574/4540/files/mozawez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0441/1556/files/nifapifatekibetuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/6203/7153/files/xetezirosaxugar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/3184/9881/files/ffxiv_level_2_aetherial_wheel_stand.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0478/7273/7446/files/xufuwarovivekazudiguwava.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6da2f836-33ba-44a9-aa07-92f274021608/soxagat.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6ee5b5f4-2229-410c-9672-cf00915416c7/rategilafakedazoki.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a262ec99-bfa3-474b-b8d3-e5ccf5a3eeaa/21776517218.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/73d91bf4-9121-4d57-89b0-f2ead8360476/38651791623.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e569c422-17f8-4500-962e-c8c9c5417a95/76056489811.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c545.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC545 2076 bytes
SHA-256: 77e3a43b68e432bde0a36de059896e0072a3654dbfa64c778f70236216d9d9a4
font_01_sfnt_off0000cf13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF13 5216 bytes
SHA-256: 7d8cdb89dd817175557e01a81e59fe8c480c0dc5b196d0dc4b7d659ef41ebf7e
font_02_sfnt_off0000e0bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0BC 12628 bytes
SHA-256: 9ef693339bc0503d2a3e39f76f833b3271a5975ac7665a51e13951bc191f19ae
font_03_sfnt_off0001097b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1097B 16060 bytes
SHA-256: 4aac81bd39f4352cc89bf96d312da1399e70aa7a4d0f9c6cf0ec82909ac4d295

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