Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc860c3492931d3b…

MALICIOUS

PDF

160.4 KB Created: 2020-10-24 01:33:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: ad4a90637ed0b9ee7910da89b6c15629 SHA-1: eb7203dd207a794359485ddcf8df1ee7730b3260 SHA-256: fc860c3492931d3bcd8b2bfbc39956a9ea1bec5c01fcc859879a22b8f42689ac
94 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a link disguised as medical dosage instructions, which is a common social engineering tactic. The embedded URL, 'https://ttraff.link/123?keyword=doxycycline+hyclate+100mg+dosage+instructions', is flagged as malicious redirector infrastructure. While no scripts were explicitly extracted, the PDF structure and the malicious link strongly suggest an attempt to redirect the user to a harmful site, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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=doxycycline+hyclate+100mg+dosage+instructions In PDF document text
    • https://kurikezexiwu.weebly.com/uploads/1/3/0/7/130775092/1ee137f145b231.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/lukuxaluk.pdfIn PDF document text
    • https://dotofinadi.weebly.com/uploads/1/3/0/7/130740455/fbbc8e9c.pdfIn PDF document text
    • https://naxesitigas.weebly.com/uploads/1/3/0/7/130740165/mizopalogutixe-fotokikuzoga.pdfIn PDF document text
    • https://mijisurux.weebly.com/uploads/1/3/1/0/131070147/1864496.pdfIn PDF document text
    • https://munujagafunudo.weebly.com/uploads/1/3/0/8/130873736/fujoratisoxijuwux.pdfIn PDF document text
    • https://bijifejutumaxob.weebly.com/uploads/1/3/1/3/131381781/9606481.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/wewajoto.pdfIn PDF document text
    • https://s3.amazonaws.com/zedudo/6121775644.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/claudio_monteverdi_cantate_domino.pdfIn PDF document text
    • https://s3.amazonaws.com/bupaxomu/thorax_and_abdomen_anatomy.pdfIn PDF document text
    • https://s3.amazonaws.com/vekodupiwarobi/complicaciones_cateter_venoso_central.pdfIn PDF document text
    • https://s3.amazonaws.com/zabevog/joint_probability.pdfIn PDF document text
    • https://s3.amazonaws.com/wilugugo/39529678842.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/buvijoxonumipamipozipow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/7993/2320/files/67173099282.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8067/8557/files/nozadiratukuku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7777/7061/files/kandungan_bayam_merah.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/acfab8de-5319-451c-b7d9-5160799eed67/waltz_of_the_wizard_secrets.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dd53ac9d-421e-4f7d-82ae-0cd53f029c5a/nezomejagutusib.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b8a7f3ce-a178-4b29-bf86-84dc3b1d2160/livijik.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/82e6e465-2769-49dc-86fc-a7b76c55b568/revijodototopejobipafi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f30644ad-c2f8-4f37-a1c2-5f23a0f00a7e/miruzazona.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_off000239e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x239E1 5716 bytes
SHA-256: 2f1748167cf401bc6c93625bae0599f0cf61687d5fd165d8df3cea77183aa6d6
font_01_sfnt_off00024d3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x24D3F 10916 bytes
SHA-256: a1fde57a6ccb1a5f7b2bcff2e92f7a7bf8f2bbd3f8933b91e97d4fb8bf14b0cb

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