Malicious PDF — malware analysis report

Static analysis result for SHA-256 0063a06975909d50…

MALICIOUS

PDF

72.3 KB Created: 2020-12-28 05:44:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 3682f95c6860fcafa2cd682efa7f770b SHA-1: 51ffde739044ece43e805dfccb3c14a819a12f63 SHA-256: 0063a06975909d50a78e3f65d75ce39090ecdc591b891f5b7b50bb467a4526ef
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF was flagged by multiple heuristics, including ClamAV and an ML classifier, indicating malicious intent. It contains a large number of external links, suggesting it functions as a link farm to distribute traffic to potentially malicious sites. The presence of external URIs and a link farm heuristic strongly suggests a phishing or malware distribution vector.

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
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://traffking.ru/aws?utm_term=contaminacion+del+suelo+definicion+pdf PDF link annotation
    • https://cdn.sqhk.co/pimidima/hfphhhb/robot_shark_vivziepop.pdfIn PDF document text
    • https://rikidunojig.weebly.com/uploads/1/3/4/4/134488605/dipene.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446643/normal_5fbf2373d94df.pdfIn PDF document text
    • https://cdn.sqhk.co/birenejar/ibidgfv/top_10_songs_of_the_70s_billboard.pdfIn PDF document text
    • https://monemoret.weebly.com/uploads/1/3/4/6/134667898/zimijazarosorafegax.pdfIn PDF document text
    • https://cdn.sqhk.co/tokititagiwe/dZhhifn/chinese_checkers_game_how_to_play_in_telugu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4502833/normal_5fe1ebc07cf88.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/a034c96e-4a0c-43a4-a55e-1bb4100da247/the_mole_bean_lab_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ec520221-42b4-4929-93b3-0563e04fdd79/fibejamazedoborit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9952d6fd-4350-4cf1-8c2c-537b21d459d0/6971557065.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/754f5328-e2a6-44fa-8560-2fa26ca05a44/my_boy_apk_pro.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/363a5b24-e13b-47cd-9165-02dc9b5723e8/84237973271.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/00baab68-e8a1-47ec-b5f3-789b679a0d18/gomijulodesufelijidifod.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_off0000ddd4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDD4 5108 bytes
SHA-256: 1f054a82f909318dfe7310259d1f7fe4ff4e12fe04bcb577829429485e6f6f34
font_01_sfnt_off0000ef25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF25 10872 bytes
SHA-256: 31b85a869aca0e89ef6ec6df94a49a5b66100670b7ca9a0a16755ed930a45b50

Open this report in the interactive analyzer, or submit your own file for analysis.