Malicious PDF — malware analysis report

Static analysis result for SHA-256 9cacb66cc32e4c72…

MALICIOUS

PDF

46.9 KB Created: 2020-10-18 00:13:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 2aee6a738151b8b4427c665f322491e7 SHA-1: 7b56047036f23c256b25bd4ebfcc4f1b35cdb1f6 SHA-256: 9cacb66cc32e4c72e812fe6409751bae3e409bd1b5737d34c7d9cda6d2d27021
154 Risk Score

Malware Insights

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

The PDF contains embedded links, including one pointing to a known malicious redirector, disguised as a legal vocabulary document. The presence of numerous external PDF links suggests a link farm or SEO manipulation tactic to distribute malicious content. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a phishing or redirection attempt.

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://ttraff.link/123?keyword=vocabulaire+juridique+fran%25C3%25A7ais+espagnol+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4368748/normal_5f8aa558cbf46.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372719/normal_5f88a91c6ec43.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365660/normal_5f873b5e527d0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369187/normal_5f880cbe2c20a.pdfIn PDF document text
    • https://ditiwudo.weebly.com/uploads/1/3/1/4/131452947/wewipanudutulenukow.pdfIn PDF document text
    • https://tavumake.weebly.com/uploads/1/3/2/7/132740551/mewomosexu.pdfIn PDF document text
    • https://mumixopid.weebly.com/uploads/1/3/1/8/131872042/7436389.pdfIn PDF document text
    • https://xikosenazegan.weebly.com/uploads/1/3/0/7/130739601/vibareralopi.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/19365a0b-2396-4bd0-b437-56da41a31efd/49796250643.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4ed23224-42a5-467f-a374-bbcc095503a9/12973250260.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/473c6e09-1eda-4cf5-b2ef-e24171e3848e/fowobiwuxoloxubinixurikos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9b923008-6756-45fb-9ffa-4c986f7dd9f8/werezaridezojalifibope.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e9fc2daf-4a86-4b70-b9fe-a7e4ab0b81d2/kesunubuwav.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eac9fe8c-d913-4def-b906-9a6a1564b421/21970769797.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2cdfd493-64e1-42d3-b5c5-c998b8874759/posumorinurorumemigor.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a36e6341-4e5d-4fed-bae0-52473c163c1a/76236503034.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e3822de2-dc6d-432c-bede-980edc4905f7/mazomagunofowotatomen.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6d88cf91-a43b-44a6-8465-b39b2ae63aed/dobawokavaloduriba.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3d2fa06b-6a27-40da-ab11-ee73d816d06c/velikewuxesozetux.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ab0033fd-99d5-4a9d-9d33-334a32e26296/misunigabiba.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_off00006c5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C5E 5812 bytes
SHA-256: 722f817ade70e5819bbd83e4e5feaac28b20e3ec3caef5f80302923d5b5fa890
font_01_sfnt_off00007fd6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FD6 14520 bytes
SHA-256: 83d72eeca6d525e9bcafb77acb922d18d8ca187a6352b3eb6b6326f046c1e52f

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