Malicious PDF — malware analysis report

Static analysis result for SHA-256 52ceec91080a235a…

MALICIOUS

PDF

68.5 KB Created: 2020-12-23 22:35:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 02090bac9518d01cf6e91f4e6bda5ca9 SHA-1: 9f06e2b99d8311ecc142fa2c35eaa561bea84ca7 SHA-256: 52ceec91080a235a113922442c742b5b280345c6132ab701b4aee6aacbd204a4
214 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'. Additionally, it features a PDF link farm with numerous external links, including one to 's3.amazonaws.com/tadevewuju/aadhar_card_copy_by_name.pdf'. The ML classifier and ClamAV also flagged this file as malicious, indicating a high likelihood of phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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.
  • 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.
  • 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=injury+report+packers+eagles In PDF document text
    • https://cdn.sqhk.co/wemupaxuziv/jhcFgia/kea_coloring_book_online_free.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384320/normal_5f941389c960e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403540/normal_5fe006a9837d9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465136/normal_5fc2724d64dc4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366969/normal_5f917de35cc8d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486363/normal_5fcecbd1b2993.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/dupuvikadijuraxere.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372371/normal_5fb5c8a045122.pdfIn PDF document text
    • https://cdn.sqhk.co/xakatikakizi/iaggogJ/today_s_weather_forecast_please.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413113/normal_5fbee014d3b36.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/tadevewuju/aadhar_card_copy_by_name.pdfIn PDF document text
    • https://s3.amazonaws.com/lorerexeg/pokemon_fire_red_breeding_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/zabevog/85075421084.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

Related samples 7

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cd4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD4F 5280 bytes
SHA-256: aca2e03424bd71e5b7adc5d3ab92c80299830096ac47c67bb37c72c890ece76d
font_01_sfnt_off0000df68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF68 11028 bytes
SHA-256: 8fcad991350cbf177f3999cf2d840faf9635c2b3812de5660982408e4fc95eb3

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