Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0d4b67058de5ef5…

MALICIOUS

PDF

88.0 KB Created: 2021-05-22 10:00:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 6daa70bf2942293a5bd225196753dbe9 SHA-1: 0047adbf84c51e1287e64051db23d7bd2ad314f5 SHA-256: d0d4b67058de5ef580b429b7a2a7ef86405e3e032e45554870be7cfdf82a8612
186 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm or SEO manipulation tactic. The embedded URLs likely lead to phishing sites or further malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://jacksth.ru/strik?utm_term=amulet+firelight+synopsis PDF link annotation
    • https://fadowika.weebly.com/uploads/1/3/4/8/134847716/93514d13dd6.pdfIn PDF document text
    • https://kazawiluk.weebly.com/uploads/1/3/5/3/135384823/fugig_totapu_posuxu.pdfIn PDF document text
    • https://jopokiwajisi.weebly.com/uploads/1/3/4/1/134108554/4064273.pdfIn PDF document text
    • https://tomadukego.weebly.com/uploads/1/3/6/0/136083679/durapel.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381973/normal_600cc5bc03ed1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480745/normal_605ac2a777132.pdfIn PDF document text
    • https://galebekamabe.weebly.com/uploads/1/3/4/3/134305591/30ac6c04e.pdfIn PDF document text
    • https://wimukevefom.weebly.com/uploads/1/3/0/7/130739067/7d07071e4b9.pdfIn PDF document text
    • https://bonomomu.weebly.com/uploads/1/3/0/7/130775928/disefe.pdfIn PDF document text
    • https://kugugurufive.weebly.com/uploads/1/3/4/1/134108893/e9ffd.pdfIn PDF document text
    • https://babikovinemixe.weebly.com/uploads/1/3/1/8/131856339/3884072.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/b0912e6f-3e80-484c-9891-e54141756848/introduction_to_abnormal_child_and_adolescent_psychology_3rd_edition_free.pdfIn PDF document text
    • https://s3.amazonaws.com/libowebujakux/82185499823.pdfIn PDF document text
    • https://s3.amazonaws.com/xefejevife/wepadivawe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ba83f149-35de-490d-a2da-bec6d246c27c/5638758685.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7cd48055-7328-405b-9020-79154c05debf/kardiyotorasik_indeks_st_snrda_ne_demek.pdfIn PDF document text
    • https://s3.amazonaws.com/nefagolom/vakaxutimadabuno.pdfIn PDF document text
    • https://s3.amazonaws.com/jupevuxirapi/7216240567.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/16d84dca-9eeb-440d-a1e7-cc764325d8eb/mixosu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2b67d075-1845-4342-bcc3-f43c3bbf78e8/24906540191.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eb32594c-45c3-474b-89d8-6fba68d1d17f/30924894804.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_off00011a49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A49 5196 bytes
SHA-256: 571f2c2fc3455590a8b9050ec143c03e458ffd21e94412d758f038f702980e17
font_01_sfnt_off00012bdf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12BDF 10968 bytes
SHA-256: ac273d0a4c3215067bdcfcae11e5a9c61d1643111f9e4bb391753c802a0ddc99

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