Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0b8231ca677b799…

MALICIOUS

PDF

67.3 KB Created: 2020-11-23 16:16:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: e172f2463b4afa9d2d1ba4b051327265 SHA-1: 27525a41823ba8aae8762dffa3e46c08b083aaa0 SHA-256: a0b8231ca677b799376c97c394b0a342a7ae5636389bb196b3b2726a7b6895f8
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged as malicious by multiple heuristics, including a critical alert for linking to known malicious redirector infrastructure. The embedded URL, https://ggtraff.ru/aws?utm_term=twin+platform+bed+with+storage+drawers, is the primary indicator of malicious intent. While no scripts were explicitly extracted, the PDF structure and the nature of the URL suggest a phishing or redirection attempt to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://ggtraff.ru/aws?utm_term=twin+platform+bed+with+storage+drawers In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366665/normal_5f8f833b1fc4d.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/279ae2a4-88f4-4175-8ef1-83885525fdef/98462022380.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1d188e95-fff1-4eca-996b-6b33248ae11e/23704357007.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2764fa65-ff74-4ed0-9192-78e9356e6687/tojimosiwexasotifu.pdfIn PDF document text
    • https://s3.amazonaws.com/bokelur/88950483891.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6c97a9e9-ea34-4bb7-832f-3c1816c27927/15555701654.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/621509f0-60a6-448a-b3b3-d4347a9b1ffc/spotted_hyena_books.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a8c59dca-a539-484f-8c31-8705416f8cdf/5e_flying_creatures.pdfIn PDF document text
    • https://s3.amazonaws.com/viromibukoleliw/kubuxiz.pdfIn PDF document text
    • https://s3.amazonaws.com/sirasu/night_elie_wiesel_reading_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9920aa19-890a-4a57-9f51-468c26a8f976/dios_habla_hoy_buscad.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_off0000c63c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC63C 5636 bytes
SHA-256: 550304cac33e8c3b4c1d3e6c70ff454804c4569ff95e781a540e12b2f81ad908
font_01_sfnt_off0000d94a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD94A 11636 bytes
SHA-256: b991192eba155fd4537b0aa5f74d41abc66f66324993109feab4af79e8739ff9

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