Malicious PDF — malware analysis report

Static analysis result for SHA-256 6617fb9200616d56…

MALICIOUS

PDF

74.6 KB Created: 2021-02-14 19:40:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 6b6aa8c55267dc82ea6f743edb191f37 SHA-1: 64557934317d1e1c936ee14c6d3461e16f8d3a1b SHA-256: 6617fb9200616d56d3d4bda391a262462b3d43684248437656e2bb221b265d01
196 Risk Score

Malware Insights

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

The PDF file contains a lure related to iPhone call answering, but the primary function appears to be a link farm. It directs users to multiple external PDF links, many hosted on S3 buckets, with one prominent redirector URL. The ClamAV detection and ML classifier strongly indicate malicious intent, likely for phishing or distributing further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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.
  • 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.
  • 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://druttle.ru/123?utm_term=iphone+answer+call+without+sliding PDF link annotation
    • https://pigokujedaxe.weebly.com/uploads/1/3/0/7/130740563/8b74d279765a01.pdfIn PDF document text
    • https://cdn.sqhk.co/wuvupalib/USdh21r/splash_canyons_level_25.pdfIn PDF document text
    • https://cdn.sqhk.co/juzivadareka/iaIfiyx/mepadumob.pdfIn PDF document text
    • http://proflist-briansk.ru/tofolutuzifufougfjf.pdfIn PDF document text
    • https://rojuligu.weebly.com/uploads/1/3/0/9/130969709/botibefoliputaj-xulegeroz-xomuleveromejo.pdfIn PDF document text
    • https://cdn.sqhk.co/kanedufopuma/epiblie/hybrid_animals_game_apk.pdfIn PDF document text
    • https://barefofu.weebly.com/uploads/1/3/4/4/134492989/vapaveka_zegikokaridesi_kavafe.pdfIn PDF document text
    • https://cdn.sqhk.co/nuzifixe/jyhgjeh/vawoxazewakasoroputomadum.pdfIn PDF document text
    • https://kikafizujugu.weebly.com/uploads/1/3/4/0/134012642/juxasedonasim.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/kofabube/48201784638.pdfIn PDF document text
    • https://s3.amazonaws.com/fejififimaketo/15654146191.pdfIn PDF document text
    • https://s3.amazonaws.com/tunenijexe/76168330378.pdfIn PDF document text
    • https://s3.amazonaws.com/mogipegi/yeezy_700_inertia_sizing_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/wibedubosateg/formbuilder_nested_formgroup.pdfIn PDF document text
    • https://s3.amazonaws.com/fofeguj/jowop.pdfIn PDF document text
    • https://s3.amazonaws.com/nitajosasa/sensitivity_analysis_report_sample.pdfIn PDF document text
    • https://s3.amazonaws.com/zozuxukoxo/anomaly_scan_22_weeks_report.pdfIn PDF document text
    • https://s3.amazonaws.com/tisegovofu/4th_grade_math_2_digit_multiplication_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/tibanepoxilibud/irda_exam_questions_and_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/rolefosiju/97493583731.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_off0000dc9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC9F 5364 bytes
SHA-256: 6eb484f3f2c01f4d48495b66145f63d2ef83278831c037b40821a71a7fc6d6d9
font_01_sfnt_off0000eee1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEE1 1800 bytes
SHA-256: e9a5a1f6ed95b1e3669933bb00002ad32a1708c3e0b735191cad5e02368a6c7d
font_02_sfnt_off0000f76f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF76F 11304 bytes
SHA-256: e01422ca709b43c07666eb38d218cd1f2e3574f32bd78dc91ab0fa48b0b47696

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