Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0bd077e8458b717…

MALICIOUS

PDF

58.6 KB Created: 2021-01-10 10:07:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 5f15821c6f6723c72ee05e93aebe1c2b SHA-1: e99c03242a2aa44f95a7150c451fcf6f7ce2ae39 SHA-256: e0bd077e8458b71763891a3e786312c96f9224053016ad9d39433256357217ee
192 Risk Score

Malware Insights

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

The PDF contains heuristics indicating it links to malicious redirector infrastructure, specifically identified as a lure for free downloads. The primary malicious URL, 'https://traffking.ru/aws?utm_term=present+tense+worksheets+ks1', is directly associated with this redirector. While no scripts were explicitly extracted, the PDF structure and malicious link strongly suggest an attempt to redirect the user to a malicious site for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9902

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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://traffking.ru/aws?utm_term=present+tense+worksheets+ks1 In PDF document text
    • https://cdn-cms.f-static.net/uploads/4454813/normal_5fa7757c557df.pdfIn PDF document text
    • https://cdn.sqhk.co/barugogip/OojP3ge/teacher_appreciation_week_2019_theme.pdfIn PDF document text
    • https://cdn.sqhk.co/wevexifimur/aCjd8gi/monster_craft_2.pdfIn PDF document text
    • https://site-1178372.mozfiles.com/files/1178372/50th_birthday_cake_designs_for_dad.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448549/normal_5fa3198c25d68.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366987/normal_5f8accdff2856.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/luxaduzimase/bridal_wave_english_subtitles.pdfIn PDF document text
    • https://s3.amazonaws.com/vukujidor/29198018377.pdfIn PDF document text
    • https://s3.amazonaws.com/jamuluvuvava/23372481038.pdfIn PDF document text
    • https://s3.amazonaws.com/fewifuwu/jenupuwugamoloresul.pdfIn PDF document text
    • https://s3.amazonaws.com/kisagoz/guide_michelin_restaurant_fontaine_de_vaucluse.pdfIn PDF document text
    • https://s3.amazonaws.com/midipes/assessment_sheet_for_nursing_students.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cf37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF37 4740 bytes
SHA-256: 418e2019283c623a8af390b1cf6b0bdd326a81f5ef962e9dac82dd43af026873