Malicious PDF — malware analysis report

Static analysis result for SHA-256 4edeecb292afc61f…

MALICIOUS

PDF

45.6 KB Created: 2020-11-04 18:57:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 9c5138dd0793925195b326a7423d8447 SHA-1: 37217cc03df46e29af7c86c91c2e252a2c6e9ea4 SHA-256: 4edeecb292afc61f139407318bef380dce81d8c7354b3e9afd684e17e07190c5
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 critical heuristic indicating a link to known malicious redirector infrastructure. The embedded URL, https://ttraff.link/123?keyword=history+strongest+disciple+characters, is the primary indicator of malicious intent, likely serving as a lure to a phishing or malware distribution site. No scripts were extracted, but the presence of the malicious URL is sufficient evidence for this assessment.

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://ttraff.link/123?keyword=history+strongest+disciple+characters In PDF document text
    • https://cdn-cms.f-static.net/uploads/4368238/normal_5f9ed49e00bdb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366036/normal_5fa1b23c29292.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375086/normal_5f91077fc7ae8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415530/normal_5fa072c8ae34a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379859/normal_5f9e5988a9dff.pdfIn PDF document text
    • http://www.opentle.orgIn 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/683c35a0-2cb1-4123-a8c3-f015eab02729/smoke_hollow_pellet_smoker_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/606d22d6-b4b8-4023-9bd0-74b10221ec89/kenmore_elite_smartwash_quiet_pak_9_troubleshooting.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/consumer_buyer_behaviour.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/527270a2-6cc4-4291-ae85-72f4a97837f0/jcpenney_stores_closing_list_2020.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b6200a7d-f8f8-41b8-9760-0bfa7d29cf72/19036487879.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b5ed3604-f4a9-4a52-8930-c472760f5195/dezutokakusomet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0b62b186-e54f-4fea-9915-4f2cfcb8b6b6/my_left_foot_christy_brown.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://www.gnu.org/licenses/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00006003.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x6003 14180 bytes
SHA-256: 93ca2a78043209e1ecc0e472007527e613604db18705e90ae9cde95d9eae6e7f
font_00_sfnt_off00004db5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4DB5 5400 bytes
SHA-256: f47376e4c63f09973d85821e16d6a5cc102b3ec80956f04d0bc07e6e4ca5181e
font_02_sfnt_off000087cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87CD 9788 bytes
SHA-256: 2bd02169edbddc3e9dfbae7e47b403e14ba9fc38fcb3ad7d92aa6a119487dd77

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