Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3433569054e621b…

MALICIOUS

PDF

69.2 KB Created: 2021-03-16 22:03:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: a6ff6eee1facadb026a056db6bfc5eb9 SHA-1: c4055e4d1b8ac5b63a8fd0061d6c106fb7a238c8 SHA-256: d3433569054e621bfc4e123171fdf37816a195e6928997695766ccb340456e3a
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF document was flagged by ML classifiers and ClamAV as malicious, indicating a phishing or trojan payload. It contains numerous external links, with one prominent URL suggesting a lure related to a movie title. While no scripts were explicitly extracted, the PDF structure and heuristic firings suggest it is designed to redirect users to malicious content, likely through embedded JavaScript or other exploit mechanisms.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://resalured.ru/123?utm_term=main+khiladi+tu+anari+movie++hd PDF link annotation
    • http://tepifugamokeg.medianewsonline.com/alinco_dj-500_programming.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387219/normal_6035aeb263929.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404984/normal_5fd15443776ca.pdfIn PDF document text
    • http://gamukanemafutu.mywebcommunity.org/jack_reacher_novels_in_order_of_publishing.pdfIn PDF document text
    • http://takipibimaxubov.sportsontheweb.net/84303278734.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480389/normal_60132fd63acc3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4444386/normal_5fee1857e28c9.pdfIn PDF document text
    • https://cdn.sqhk.co/xovopebe/dicicja/naligulalasijazuvufeku.pdfIn PDF document text
    • http://wejuveziwep.mypressonline.com/sleeping_beauty_waltz_piano_duet.pdfIn PDF document text
    • https://cdn.sqhk.co/fudikeraz/XgiApjh/ironite_liquid_fertilizer_reviews.pdfIn PDF document text
    • https://cdn.sqhk.co/matajikiwov/fXmND0e/song_animal_ringtones_mp3_free_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421460/normal_5fea15a964a76.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/zuguvoxoki/45343852287.pdfIn PDF document text
    • http://tasenos.epizy.com/85947850656.pdfIn PDF document text
    • https://s3.amazonaws.com/padosumifubobo/rofodufulekire.pdfIn PDF document text
    • http://senotujupube.epizy.com/augmented_reality_apps_for_android_free.pdfIn PDF document text
    • http://susabumo.atwebpages.com/what_are_the_5_types_of_plot.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 8

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_off0000d33e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD33E 5016 bytes
SHA-256: d662ad01be11f8046c52366e0c36bb00a0cd1493dc5c43349fdfd5c2b949d2dd
font_01_sfnt_off0000e433.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE433 10492 bytes
SHA-256: 6775423a26960a8ff22624def93fd1d20879665947bdd59d73b1e4b16ce87684

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