Malicious PDF — malware analysis report

Static analysis result for SHA-256 aae3d1675daa537e…

MALICIOUS

PDF

61.7 KB Created: 2020-10-28 06:52:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 1fe017c1a4d80c48bd2706481cde5237 SHA-1: 14625ec406412f4999516380302dd074111b4f7a SHA-256: aae3d1675daa537e0f3aeccdd715b89972fb2ae1f35db3fcdcf1f5cfc7259fdb
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file is identified as malicious due to its structure, which contains a large number of embedded links. One of these links, 'https://ttraff.link/123?keyword=the+civil+contract+of+photography+pdf', is flagged as a known malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting an attempt to direct users to malicious infrastructure. The presence of numerous other PDF links further supports the classification as a link farm designed for malicious redirection.

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://ttraff.link/123?keyword=the+civil+contract+of+photography+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4413564/normal_5f9714ea02def.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367301/normal_5f8ce31ce98c0.pdfIn PDF document text
    • https://zafojepomekosax.weebly.com/uploads/1/3/4/3/134352399/7c99932ba91a1b.pdfIn PDF document text
    • https://gimejexoxixaza.weebly.com/uploads/1/3/1/8/131872185/kadupe_ripovu_jozovagazemewe.pdfIn PDF document text
    • https://fawefugixizim.weebly.com/uploads/1/3/1/3/131383791/76decc700e8a3.pdfIn PDF document text
    • https://tovozilulu.weebly.com/uploads/1/3/0/8/130873983/pagetapulurozu.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/1/0491/7195/5878/files/diccionario_turco_espaol_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/5591/2862/files/11429622867.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5057/3719/files/weight_loss_tracking_chart.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/5582/7094/files/student_handout_new_congressional_staff_orientation_notes.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/cholesterol_lowering_diet_sheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0268/8784/8121/files/caller_name_announcer_pro_cracked_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0505/9117/0725/files/nujijuta.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/3589/7251/files/vedaginawelusotew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/2825/0276/files/above_the_influence_ads.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1966/3522/files/99892909462.pdfIn PDF document text
    • https://s3.amazonaws.com/dogazisuze/subject_verb_agreement_quiz_with_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/4574061638.pdfIn PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/list_of_current_cm_and_governor_of_india.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/alligation_and_mixture_download.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_off0000a5fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA5FE 5136 bytes
SHA-256: 6a0e4ba5c7c0b13c12143ba44d2eb7c0febf0f8a6bbc52ceeec962568831dd99
font_01_sfnt_off0000b76e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB76E 10528 bytes
SHA-256: 0c3d9944dd5b7263548c75b4cf836e91360ebf83a1fee4b288ab0696bb2ce109
font_02_sfnt_off0000db10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB10 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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