Malicious PDF — malware analysis report

Static analysis result for SHA-256 97090702e9829eca…

MALICIOUS

PDF

51.5 KB Created: 2020-10-29 16:25:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 1eaa212e858553bca888e42196623453 SHA-1: 2d516968f36e88210dcfb7eab0a7faa6122af3d8 SHA-256: 97090702e9829ecacd3227a0f66043eef7089f259723c4e3acfbd90268194f7c
154 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to malicious infrastructure, specifically identified as a credential phishing lure impersonating Netflix. The document body, though heavily obfuscated, contains references to a 'skillshare free trial code' and a URL that aligns with the phishing attempt. The ML classifier also strongly indicated maliciousness.

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.
  • Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://rowofijiguni.weebly.com/uploads/1/3/4/4/134479741/jexalo_dupamabo_maduv.pdf.
  • 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://ggtraff.ru/strik?keyword=skillshare+free+trial+code In PDF document text
    • https://cdn-cms.f-static.net/uploads/4404727/normal_5f9431f14a2c0.pdfIn PDF document text
    • https://rowofijiguni.weebly.com/uploads/1/3/4/4/134479741/jexalo_dupamabo_maduv.pdfIn PDF document text
    • https://pudegubazamase.weebly.com/uploads/1/3/1/1/131163945/piwotezaxi_jagexeruxuzopas_luwodolakanuwo_kuvinom.pdfIn 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/23c63589-ddd2-44b5-b403-c1f29d5ef39c/bapiverawiwaniva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0507/1139/6512/files/noguzajixizonu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/82c866bd-3e1e-4fec-8a49-fbaff1ddb2d7/60543388204.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/80fdec2c-1d44-4f02-99c9-552a8f9e5574/nenjodu_kalanthavale_song_lyrics.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b5fd07d7-a1ba-4ff2-b7aa-590de67401c1/22939479325.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b4c862fd-c7bc-4e9e-b66d-6bce1e2fec92/vufixunegusaror.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/9579/4857/files/half_life_2_android_no_controller.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/5149/4811/files/freedom_from_the_known_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7286/3907/files/bedimibadukenaruwona.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/80e65e7c-48e3-48a9-b231-a92204441e83/wejuxu.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000068fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68FC 5276 bytes
SHA-256: 8405a07e0d6477ec8bcde2e60920b12d9b0f8a54985690defa7975bb3417302a
font_01_sfnt_off00007ae1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AE1 2268 bytes
SHA-256: 253c50839ac6626950ebb29913d4b50f84c7f91f95a3b3e9574581cbf972dee6
font_02_sfnt_off00008540.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8540 11044 bytes
SHA-256: 2f024a0e983f1677474ff49e01f7a3bfbf7e4c7c16641d26ed81de3fdf97d91c
font_03_sfnt_off0000ab51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAB51 16092 bytes
SHA-256: 39b2f4b99ee08965fd4836f89f628a00cde8346cb181131bba0308e80db8fb67

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