Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6202229b5c6b8aa…

MALICIOUS

PDF

67.1 KB Created: 2020-12-17 09:39:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 50954a1b51a6f7b3788f90d1dcc30c99 SHA-1: f492d8c42aafa3832e593f44d2d28f8b2b54b62a SHA-256: a6202229b5c6b8aa338ecbc150629f6db1e2827b53aa28b3bc6f4b3facaa32ed
134 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains a link disguised as a download for 'fildo apk 3.4.1'. Heuristics indicate this is a link farm on disposable hosting, and ClamAV detected it as a phishing trojan. The ML classifier also strongly flagged it as malicious. While no scripts were directly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious download site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://trafficel.ru/123?utm_term=download+fildo+apk+3.4.1 PDF link annotation
    • https://nogafuku.weebly.com/uploads/1/3/2/8/132815296/65bfaa.pdfIn PDF document text
    • https://lisiruzefixa.weebly.com/uploads/1/3/4/4/134495270/jafam-wumipojumixodu-giwasoxisezaret-bixulufazo.pdfIn PDF document text
    • https://volamajujidek.weebly.com/uploads/1/3/4/6/134667755/43f3860bc15c.pdfIn PDF document text
    • https://vabeliguteziji.weebly.com/uploads/1/3/1/3/131379360/e95663c62b39.pdfIn PDF document text
    • https://vataripisak.weebly.com/uploads/1/3/4/6/134600115/604e93c9e15.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407086/normal_5f9ad87e77edb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372371/normal_5f93597af0f29.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc6d00a6879d031da0df63f/t/5fce7d4aaf793577f83ce4fb/1607368012255/sceptre_tv_remote_codes_directv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/de6ddb1c-e23e-437f-9869-7411e829c20a/wupujizivokap.pdfIn PDF document text
    • https://s3.amazonaws.com/bidivo/95348507720.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/05c67c89-0f44-4724-ae72-cf60b5cb3485/dinosaurs_a_concise_natural_history.pdfIn PDF document text
    • https://s3.amazonaws.com/wukara/55769252354.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c802c103-a99c-4c2a-a556-6f1764052b9c/30978877754.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc13070e2fce462bc8dc846/t/5fd00587349c940859187fe2/1607468423913/tipurexofejam.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_off0000c8ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC8AC 5252 bytes
SHA-256: b6ee53b5fbe1332a7fad23692e43b309b676cc8576ef05739fba2acfd6ead735
font_01_sfnt_off0000dad2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAD2 10864 bytes
SHA-256: 9b80f037620fb666ed82576fca899afdaf34bca3482eac5f38cefe71e93cb3bb

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