Malicious PDF — malware analysis report

Static analysis result for SHA-256 46d51b846a1c8533…

MALICIOUS

PDF

44.8 KB Created: 2020-10-28 22:31:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 8c6df85b8a3482594037352015e904fe SHA-1: 53b082805b4d777474fab21427f3c780af8a2ca0 SHA-256: 46d51b846a1c853358a3db6b46aa6f9eb0c5bfb05c70c3f0c2091d19c5c74f35
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains embedded links designed to redirect users to malicious infrastructure, specifically a site that appears to be a redirector for phishing or malware distribution. The heuristic 'SE_PAYMENT_REDIRECT_LURE' indicates the document's content is crafted to mimic financial transaction instructions, suggesting a business email compromise or financial scam. While no scripts were directly extracted, the PDF structure and embedded links strongly suggest an attempt to exploit vulnerabilities or trick users into executing malicious actions.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise 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/aws?keyword=bank+account+number+on+rental+application In PDF document text
    • https://cdn-cms.f-static.net/uploads/4403537/normal_5f99ccba7833f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367927/normal_5f91cfd841bd2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366389/normal_5f8b4f7a0a2b3.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/ba9d33ff-7e9b-45e8-b0d9-40029933124d/wijirowalixavuwipelogef.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/73d09732-3a14-4c72-acce-a235a033cc09/25259793207.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9502/4025/files/ikea_catalogue_2020_uae.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5597ad73-a3e9-4b84-9a38-c36a8ca130ad/nunoxokifilebexixixuku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/7085/2762/files/rorezuzodewila.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e2f7513d-ad10-4504-8d49-2fb50f43436c/vomibagozedosikegefit.pdfIn PDF document text
    • https://s3.amazonaws.com/sazariwapa/culinary_tourism_journal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0494/7469/9431/files/lerelaxuviralekikez.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4be7361c-2209-4792-b2f6-7f6bba17c1af/4244251474.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/74e92b23-9d69-45a6-90da-bf0acd1d3798/pokobonaxupawituwivekab.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d6d5da2c-949f-4ed8-b878-9b91c2871260/14909149732.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/be89186e-e723-4aaf-b468-4da54be3d54a/76355868437.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/99fe81c3-6c6f-42e8-99fe-a561b8b35612/playstation_4_app_apk_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2da5d264-2a4d-4341-8baf-391b078ff0eb/lelaluvo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b1d547fa-02b2-42ca-9cd2-f453ce69d928/3222429036.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a2ff6922-65d7-4a9b-b69f-2d4006ffb891/sezefaxef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/0580/3158/files/ritamisirug.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_off00007104.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7104 5156 bytes
SHA-256: 07384790b67d20b28657bfb85aacb4d36a31278fd8d2887a2b79aa4190695ee9
font_01_sfnt_off00008275.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8275 10332 bytes
SHA-256: e2f65f3abb1e040f3c6844f4020d6af13d98c7721aa0d0102af4bcf1eb22aae9