Malicious PDF — malware analysis report

Static analysis result for SHA-256 a18490721d55f4e5…

MALICIOUS

PDF

74.7 KB Created: 2020-12-06 07:40:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 5b42faf23e6f985aeace20a39bbcef5b SHA-1: 81404e40fe004f6b0ea58fb0c98c2c96fa66fb6f SHA-256: a18490721d55f4e5a97222c13e2da72cf63a77fec2510131257a8fa11552a240
154 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, with critical heuristics indicating it links to known malicious redirector infrastructure. The embedded URL, 'https://traffmen.ru/aws?utm_term=canva+infographic+template', is the primary indicator of malicious intent, likely serving as a lure for phishing or malware delivery. No scripts were extracted, but the PDF structure and malicious URL strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • 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.
  • 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://traffmen.ru/aws?utm_term=canva+infographic+template In PDF document text
    • https://cdn-cms.f-static.net/uploads/4465015/normal_5fa70c282f2f4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380086/normal_5f8d42a250f9a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485579/normal_5fb524e1066c5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404750/normal_5fa2297c88e68.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://static1.squarespace.com/static/5fc389708787e879897c9404/t/5fca6a9b7920841f0ed6762a/1607101083832/41499307939.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cf0e1a40-d3dd-4ef9-a3d7-29db1c4936e5/sukurapadasoloxelavab.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1c772d62-363f-4e21-a931-e20a869bdf18/26801479424.pdfIn PDF document text
    • https://s3.amazonaws.com/pomaxa/ereading_worksheets_theme_2.pdfIn PDF document text
    • https://s3.amazonaws.com/jidosatikim/63835987212.pdfIn PDF document text
    • https://s3.amazonaws.com/xeponodij/alien_shooter_mod_apk_free.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc370cbcd1e280355e45738/t/5fc4003e3c02f22b9d894fca/1606680649518/palox.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_off0000d974.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD974 5124 bytes
SHA-256: 40dd5ee49dd4d8a43d2868a8fcd0cd561434f4f2ba7e165180679016be492d8a
font_01_sfnt_off0000eac5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAC5 10864 bytes
SHA-256: e9c4cf9ef2a85647730c7d63c7d6c2457015ee14d8179376a3446e3a938f3882
font_02_sfnt_off00010fb0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FB0 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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