Malicious PDF — malware analysis report

Static analysis result for SHA-256 01a3d3181e2a6772…

MALICIOUS

PDF

46.9 KB Created: 2020-11-04 14:56:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 510a77d0cddc6ed047ad7a01c03147d0 SHA-1: d12b0a739e2781c27bda1b5a5b43e8e1795ae365 SHA-256: 01a3d3181e2a67726dd35b6ef5b172253573efd3ce63e01fc7d3fcef381783f2
94 Risk Score

Malware Insights

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

The PDF contains embedded links, one of which, https://ggtraff.ru/aws?keyword=pesticide+core+manual, is flagged as a malicious redirector. The ML classifier also strongly indicated maliciousness. This suggests the document is designed to trick users into navigating to malicious infrastructure, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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?keyword=pesticide+core+manual
    • https://cdn-cms.f-static.net/uploads/4449614/normal_5fa0b4bb01367.pdf
    • https://cdn-cms.f-static.net/uploads/4369328/normal_5f87bc01b9156.pdf
    • https://namoniwuxixipej.weebly.com/uploads/1/3/4/6/134606628/401552.pdf
    • https://cdn-cms.f-static.net/uploads/4389376/normal_5fa20a59c52d1.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/55b623d0-cef8-4513-950d-907caf8d93e5/mumexunurinafegesuz.pdf
    • https://cdn.shopify.com/s/files/1/0507/7729/2982/files/derivative_of_exponential_function.pdf
    • https://s3.amazonaws.com/divexikav/cards_against_muggles_free_download.pdf
    • https://uploads.strikinglycdn.com/files/3e16a05e-a38e-44e2-b38b-e99b1c9160e0/upper_iowa_university_bookstore.pdf
    • https://uploads.strikinglycdn.com/files/ef2461ad-9ef3-4d14-84e4-36f6e5e41568/lirevated.pdf
    • https://uploads.strikinglycdn.com/files/6d09ce59-06f7-4165-85fb-9256b197adfa/pubg_mobile_guide_of_game.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006a23.bin
86d9807106b17cefc42151d2c9ad518de35a3d27f50a3160e4d8161496edddb0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A23 4968 bytes
font_01_sfnt_off00007ad9.bin
a66486ca5464c1187b24efb5bb2a87efcdb1995d9731c59cb6f61d05a282b34d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7AD9 11296 bytes
font_02_sfnt_off0000a13e.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA13E 4324 bytes

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