Malicious PDF — malware analysis report

Static analysis result for SHA-256 69717fdf2303c979…

MALICIOUS

PDF

43.2 KB Created: 2020-11-01 03:08:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 43ba4a3d7a7b14e2f5936759c4103c47 SHA-1: 168bacf23a22d6404dd10a99df70ce296776d1ed SHA-256: 69717fdf2303c9798f2765680d4457ee91856111870761aa01bc5e3b6f6901be
154 Risk Score

Malware Insights

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

The PDF contains a link farm and a primary redirector URL, indicating a phishing or scam attempt. The document body, though obfuscated, contains keywords related to the linked URL, suggesting a lure to a malicious site. The presence of embedded URLs and the ML classifier's high confidence score support the malicious verdict.

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://ggtraff.ru/strik?keyword=nba+2k15+controls+xbox+360 In PDF document text
    • https://jemiwuwavaza.weebly.com/uploads/1/3/0/8/130814288/8604260fc.pdfIn 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/1/0499/9633/3251/files/what_is_an_indicator_species.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/959cb7b9-4416-4ee1-b1ac-32ef569a2b85/xofiwugus.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f68dbc15-984b-417f-b6b3-f779bdc13921/6750875075.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/rewifelukedemavuxowasuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6458/1525/files/pobebupusexumatapofagoxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/1684/2147/files/bexivaxumuxuwebudidogaman.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0627/1394/files/33356696977.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/08783cb6-0e3f-4873-9f5e-6ce7051756a5/new_orleans_crab_cakes_recipes.pdfIn PDF document text
    • https://s3.amazonaws.com/kuboki/tuwewaxojododejiwi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/9788/9193/files/lesuxiwanaxexulumi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/90cb9069-c6d6-483c-9c95-1c0ebbf01cb6/davezegisar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7e06685b-833b-421d-a1d6-ab1505a38b3f/98089457732.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_off0000684e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x684E 5804 bytes
SHA-256: bd3f6f608bbe627af1960fdc06f7f44b9ed71a63a33c6c1cc9aaf9fd3ec1072b
font_01_sfnt_off00007c2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C2F 10636 bytes
SHA-256: ff69434a854b49ddbcf0a644ff0475066d037af42a205d878775af308fa8d3b7

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