Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2a1a03995c14041…

MALICIOUS

PDF

41.8 KB Created: 2020-10-29 22:44:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 2c2150aad26454e295b368909c19557e SHA-1: bb7ca9601cb181798e8c324c95c08db8f941d51f SHA-256: e2a1a03995c14041b3ee80c127940dffee8c69247e3301d8eb07406883d3bb29
154 Risk Score

Malware Insights

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

This PDF file contains a large number of embedded links, including a critical redirector link to 'gettraff.ru'. The document body, though heavily obfuscated, also contains this URL and appears to be a lure related to "century egg cookie clicker". The ML classifier strongly flagged this PDF as malicious, indicating it's designed to lead users to harmful content.

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://gettraff.ru/aws?keyword=century+egg+cookie+clicker In PDF document text
    • https://zavisedifigi.weebly.com/uploads/1/3/4/3/134316550/837c1f0eb8ea53a.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/1/0431/5817/5895/files/thoracic_epidural_steroid_injection.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b21ffcff-8240-4379-9e7c-8840bc0e40df/92387352510.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/1223/3637/files/pepulakesapiduger.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/665bef8e-425d-429b-840c-3339e873a769/44542277156.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/5760/9386/files/seek_first_to_understand_then_to_be_understood_activities.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/6510/1476/files/the_making_of_the_fittest_got_lactase_worksheet_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4244ec87-9261-4523-a746-3931a9f22477/rent_musical_score_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/08576e19-141e-4731-b1a7-74577d438125/patibupadowoluzozokodisek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/5322/3588/files/judge_lynn_toler_books.pdfIn PDF document text
    • https://s3.amazonaws.com/waxejajinigafu/new_line_cinema_logo_2001.pdfIn PDF document text
    • https://s3.amazonaws.com/vuxalirudidel/nuvavufi.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_off0000657f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x657F 4648 bytes
SHA-256: d8e1936f6f08ec38d55356f04265123d2adbe8da9a794614a72f6831d6e538c1
font_01_sfnt_off00007575.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7575 10996 bytes
SHA-256: 8a8ff511396467077b860bfd44b61265693f688b63c223ed1af96c6a4ffe4630

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