Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e2d55fd701c410a…

MALICIOUS

PDF

70.0 KB Created: 2021-01-11 10:32:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: c453230dc00a7ba4c8345cfea174fa0b SHA-1: 92a44c1f675fcdcdbba2b2c3f080f46d5eacf89c SHA-256: 7e2d55fd701c410add97af80cc006ad0dd4e910a607a7e2302d5c336b2c135cf
162 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ggtraff.ru'. This, combined with ClamAV detection and an ML classifier flagging the PDF as malicious, strongly suggests a phishing or malware distribution attempt. The embedded URL is likely intended to lead the user to a malicious site, potentially for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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.
  • 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://ggtraff.ru/aws?utm_term=complete+anatomy+apk In PDF document text
    • https://cdn-cms.f-static.net/uploads/4372358/normal_5fbdd0f2e1959.pdfIn PDF document text
    • https://cdn.sqhk.co/jumifokujuje/ikTTjiy/mazes_and_monsters.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388162/normal_5fd93e02937e8.pdfIn PDF document text
    • https://cdn.sqhk.co/barugogip/TUqi1hB/ludo_neo_classic_download_uptodown.pdfIn PDF document text
    • https://cdn.sqhk.co/digiwejasipu/jdhcbUn/57285270373.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374009/normal_5f9558e66d20b.pdfIn PDF document text
    • https://cdn.sqhk.co/werutojij/S4OSjig/67657815630.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/lolijexejomak/wodetaxavugixox.pdfIn PDF document text
    • https://s3.amazonaws.com/tokudapele/lagu_carry_on_angra.pdfIn PDF document text
    • https://s3.amazonaws.com/jesidofefe/ldpe_sheet_uk.pdfIn PDF document text
    • https://s3.amazonaws.com/fidobakipivogit/akbar_birbal_cartoon_tinyjuke.pdfIn PDF document text
    • https://s3.amazonaws.com/jijumupade/apostrophe_worksheet_for_grade_2.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d4fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4FE 4760 bytes
SHA-256: 503e7f61fe398db2d1442a57fe34df0f189332b1f5a3f1bc3db41b9867ab7acc
font_01_sfnt_off0000e52a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE52A 11080 bytes
SHA-256: ab3555c2f4da421ad0464c4ffb4a930217bfcd3ee7bea06ac3ccd91caec434eb

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