Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ee9450dcbd70f9b…

MALICIOUS

PDF

131.8 KB Created: 2020-12-31 05:43:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: ac16cab059f740170bce1739a8c711a3 SHA-1: c74bea6e0b53c0b877f18dd646141b247abee333 SHA-256: 2ee9450dcbd70f9bbfea7bfcb4bb9f94d670d1c9b9efb54a88fb297de8094bd2
242 Risk Score

Malware Insights

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

The file is identified as malicious by multiple heuristics, including a critical finding for linking to known malicious redirector infrastructure and a PDF link farm. The ML classifier also strongly flagged this PDF. While no scripts were extracted, the presence of numerous embedded URLs and the link farm suggest a phishing or scam attempt designed to lead users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9988

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://cctraff.ru/wb?keyword=efectum%20slow%20fast%20motion%20reverse%20blur%20video In PDF document text
    • https://lagukekejase.weebly.com/uploads/1/3/0/8/130815031/bigoton-pudonigix-gunimajoxelir-motezuwosaj.pdfIn PDF document text
    • https://raxisova.weebly.com/uploads/1/3/4/4/134494277/5a5ecedf946091.pdfIn PDF document text
    • https://siveruvamavekug.weebly.com/uploads/1/3/4/2/134266289/694840.pdfIn PDF document text
    • https://sopoxovolofu.weebly.com/uploads/1/3/4/5/134509961/rizoruvosurolivina.pdfIn PDF document text
    • https://juporolo.weebly.com/uploads/1/3/1/3/131380745/fonexi-wakubutotel.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/e5ce64ef-d01b-4d94-b4ff-35822c5e08d2/winigi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/13f380d0-f0f6-4ec8-8e37-1651a429102c/too_many_tamales_story.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/52694393-ce96-47c3-813e-72f5c1803f05/kirixaveziru.pdfIn PDF document text
    • https://s3.amazonaws.com/zerepuzuze/the_summer_season_in_spanish.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/86f396b6-1988-4d0c-ae2a-7a1f96cc4015/91060171701.pdfIn PDF document text
    • https://s3.amazonaws.com/xatojem/16148053185.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/923a5734-e820-4700-a058-51eef25479b0/kuwatesuwaxis.pdfIn PDF document text
    • https://s3.amazonaws.com/wanalovum/binder_spine_template_publisher.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e6ff1afc-4b6a-4167-b6c8-536580cbcb8f/denarifikixejizonamotuwe.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00017234.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17234 2952 bytes
SHA-256: cb9072f881c1fe0ad8900bbcc5a20a23fabb306412f64e001cac76c2a9509f2c
font_01_sfnt_off00017cc3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17CC3 5416 bytes
SHA-256: 985cd3d930a9c6801e926f7c08115c553eabc158dab7d0ccb895a5be63061382
font_02_sfnt_off00018f2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18F2D 9156 bytes
SHA-256: 9e9a17c220c3c00a9fc6c4ec9669755ff06cbfe3899d5171335791028e203fca
font_03_sfnt_off0001abd8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1ABD8 19008 bytes
SHA-256: 89dc6a1ab9aca5d6572ec921f10050bd1fc4975216799844a55ab9c1183677da
font_04_sfnt_off0001e838.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1E838 17208 bytes
SHA-256: 3bc4ee0acce49222cbe5d4bd24704564cfee5b6ed1aecd84d71c9159b9a1e490