Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1e89f80f0099254…

MALICIOUS

PDF

49.9 KB Created: 2020-10-26 11:03:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-25
MD5: 1f354cd0972822e68ec1e544c7b88b26 SHA-1: f949aecc0b6df32f7a89137c2cd08f969c0acd0d SHA-256: d1e89f80f0099254506257852aab53853f391abab6ab43090b1fa6d29629f837
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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.com/123?keyword=uninstall+malwarebytes+mac+manually In PDF document text
    • https://pezujotage.weebly.com/uploads/1/3/4/3/134318684/8658538.pdfIn PDF document text
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/7360136.pdfIn PDF document text
    • https://gomemetunugup.weebly.com/uploads/1/3/2/7/132712315/ad84c.pdfIn PDF document text
    • https://sepikupi.weebly.com/uploads/1/3/0/7/130738949/gugadukoje.pdfIn PDF document text
    • https://giwakatunu.weebly.com/uploads/1/3/1/4/131437107/xaloni.pdfIn PDF document text
    • https://worobewunit.weebly.com/uploads/1/3/1/4/131406731/fuzewomuzowa_bikav.pdfIn PDF document text
    • https://kurikezexiwu.weebly.com/uploads/1/3/0/7/130775092/b65856394279cac.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0494/0087/3127/files/84810496180.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/6925/8919/files/geometric_means_in_right_triangles_worksheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/47228d2c-6787-443b-a034-c7bce948131a/71561456808.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4ba3c5b1-ad52-4d58-8d3a-e250de456af4/toshiba_thrive_at105_android_4.1_update.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/57473779826.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/sadevasolasavuwipun.pdfIn PDF document text
    • https://s3.amazonaws.com/tizowodifi/23143729367.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/3192/0284/files/7623829136.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0478/9177/5654/files/adjectives_that_start_with_you.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7768/7706/files/jivijaxerokori.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8570/2319/files/canada_evidence_act_annotated.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007718.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7718 5040 bytes
SHA-256: 57b68f82097007236e51c7147cb1c22d3ae8908a7e7b6fb1d42a3c2fa4f48706
font_01_sfnt_off0000882b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x882B 10424 bytes
SHA-256: 57cba262035466bef38a987186a7adcfa96f88e3217eee6cb4bf991e31f0289d
font_02_sfnt_off0000abf4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xABF4 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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