Malicious PDF — malware analysis report

Static analysis result for SHA-256 d96282ad6b00fafb…

MALICIOUS

PDF

79.2 KB Created: 2020-12-02 07:51:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 2049a553b5c23f0b1e0477856705cc0c SHA-1: 19415e95485b24d65ad0c75f4ee7a89d5379f5bc SHA-256: d96282ad6b00fafb1c0b35ae053a005c493aa2aa8250bf5a614372309a69d5da
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various domains. One prominent URL, 'https://traffnew.ru/aws?utm_term=aaron+smith+dancin++free', is directly embedded and likely serves as a lure. The ClamAV detection and ML classifier strongly indicate malicious intent, classifying it as a phishing trojan. While no scripts were explicitly extracted, the nature of the link farm suggests an attempt to redirect users to malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://traffnew.ru/aws?utm_term=aaron+smith+dancin++free PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4403689/normal_5f9593b7494fb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370791/normal_5f90dd9ded34b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449177/normal_5fc38ab2c67ac.pdfIn PDF document text
    • https://nisofopirumo.weebly.com/uploads/1/3/4/4/134478351/nojijopa_soxufarabipe.pdfIn PDF document text
    • https://ridolagu.weebly.com/uploads/1/3/0/7/130775195/diren.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413976/normal_5fa45c87e5563.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367947/normal_5f91afa725f4b.pdfIn PDF document text
    • http://fontawesome.iohttp://fontawesome.io/license/In 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://s3.amazonaws.com/pavujiniz/mh_cet_law_2019_application_form_date.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/feb49d16-dfd3-45cb-84d4-276fa67eb9ae/watinasagu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aec05ff9-79b5-4ef3-ba07-c33e81cbfa9a/71274087062.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6e1166ac-8e59-4409-85b8-b5013e315330/andy_carpenter_series_in_order.pdfIn PDF document text
    • https://s3.amazonaws.com/dejolavubukugeb/reporting_bogus_calls_from_hmrc.pdfIn PDF document text
    • https://s3.amazonaws.com/kosipefojaw/ministry_of_transportation_medical_report_form_ontario.pdfIn PDF document text
    • https://s3.amazonaws.com/nilafafakem/python_crash_course_cheat_sheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/273aee4d-3e70-4391-8d12-99502c928fcd/kanatomeg.pdfIn PDF document text
    • https://s3.amazonaws.com/vavejijitatofu/fesiwujiv.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 7

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b0cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB0CD 3036 bytes
SHA-256: aa5372358103b7cc4ef908374b598f052ee1396b52dcf70fa50afca2ab89f292
font_01_sfnt_off0000bdae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBDAE 2888 bytes
SHA-256: adf32003828e0940dd70a9ab198bdbf787bfce6d516b45b646911e816e1ab742
font_02_sfnt_off0000c7f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7F6 5008 bytes
SHA-256: eabcfce8acc8cd02bd4d9743f41898eb1fb950aa35dff073caaff0be857f1f7a
font_03_sfnt_off0000d8b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8B9 2128 bytes
SHA-256: 0e0259ac06b5e63c9fbbe0b63de04b6375a8b8a1b56afe9f0e4286666c95e82a
font_04_sfnt_off0000e288.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE288 11952 bytes
SHA-256: ab2ef41c367a219dbdb4c985d98c8f36be45d4094684dac4ad8e47129ee0960c
font_05_sfnt_off000107f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107F1 16744 bytes
SHA-256: b6e04a927c2012552519e1d950d70c0df76771797756fbc90fc2357d6becb0ad
font_06_sfnt_off00011e80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E80 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333