Malicious PDF — malware analysis report

Static analysis result for SHA-256 a16dc050c7e576ef…

MALICIOUS

PDF

49.9 KB Created: 2020-10-12 05:50:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 734bd30166997087af942ace8e82d67d SHA-1: 7401ab7e1856be452abd816d390dc1144799cb2a SHA-256: a16dc050c7e576efda18738665dfd9dcbf9861d9362aebcbfc39c41eee2c321c
94 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by an ML classifier and contains a link to known malicious redirector infrastructure. The embedded URL `https://gettraff.ru/pify?keyword=nyc+kindergarten+admissions+guide` is the primary indicator of malicious intent, suggesting the document is part of a phishing or malware distribution campaign. No scripts were extracted, but the presence of a malicious link strongly suggests a spearphishing attachment attack vector.

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://gettraff.ru/pify?keyword=nyc+kindergarten+admissions+guide In 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/43e2ca6e-94da-420c-aaf2-740a8ad74f58/gafuwamixobepabefopiw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3894388e-e050-4492-b90e-0633c8bd86a0/puwawuwodonufaxarewa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9c6ce62c-83d8-42db-bd59-805e8b96748b/sutoxowitazumubu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/49b8bf28-246e-4e0c-9c9c-a65c7d06ec64/fijutotavutanowe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9456/5271/files/romovuremer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/2987/4853/files/planet_fitness_marketing_manager_salary.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/3125/2120/files/golden_nugget_wendover_sportsbook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0903/1840/files/disgaea_item_levelling_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0487/0019/4966/files/pedubumuvodilejikazogugu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0457/3862/3132/files/ga_lottery_app_for_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0365/7887/files/85110182674.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_off00008396.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8396 5360 bytes
SHA-256: 3a330a48a03899dc52b6ef838fca658662b16f79870357bb6a16a72a82e92109
font_01_sfnt_off000095c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x95C0 11064 bytes
SHA-256: 3a2df4e8ea2caa7a9d570c546df0ddb46ee17c48d5955719f47c63edf4b6329f