Malicious PDF — malware analysis report

Static analysis result for SHA-256 72b3112d6173a35e…

MALICIOUS

PDF

51.5 KB Created: 2020-11-05 22:54:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 8a6cd399f779d9658bd9bf9e2d9177ed SHA-1: 12181f229de3209b01053652fb9cd5cc9712590f SHA-256: 72b3112d6173a35ed51022c34513e36557bc58ef2d15abd666ba90cdc3d59597
194 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document contains numerous links designed to create a link farm, with a primary malicious redirector at https://traffine.ru/aws?keyword=a+whole+new+world+sheet+music+piano. The document body, though heavily obfuscated, contains this same URL, suggesting the intent is to lure users to malicious infrastructure. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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.
  • 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://traffine.ru/aws?keyword=a+whole+new+world+sheet+music+piano In PDF document text
    • https://bizetuxerupa.weebly.com/uploads/1/3/0/8/130873791/weligatoreso_gopilanimogan_jitibi.pdfIn PDF document text
    • https://mawepalutolura.weebly.com/uploads/1/3/4/0/134040672/silixekipivabu.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/f9dbc892-ea50-4fed-b56a-eaf2de031e21/69409648941.pdfIn PDF document text
    • https://s3.amazonaws.com/punagilelabon/23009073736.pdfIn PDF document text
    • https://s3.amazonaws.com/wixamupelinere/82888687493.pdfIn PDF document text
    • https://s3.amazonaws.com/wuxibipan/9499519574.pdfIn PDF document text
    • https://s3.amazonaws.com/mamibis/41388675732.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/471f820e-48d5-4178-a05a-ef0311410c08/58914297387.pdfIn PDF document text
    • https://s3.amazonaws.com/mamibis/resinas_in_english.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9a56769f-0779-4e67-9273-31d96e8dcc12/matilda_movie_download_mp4.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1cf6bc59-b985-442c-b4c0-f0aa04d175c4/vufupizobusowonimovew.pdfIn PDF document text
    • https://s3.amazonaws.com/nonabafat/mpow_059_bluetooth_headphones_microphone.pdfIn PDF document text
    • https://s3.amazonaws.com/zizene/88006216490.pdfIn PDF document text
    • https://s3.amazonaws.com/wesezuzuvalirik/teologia_sistematica_wayne_grudem.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/julesadixetagobisav.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000762d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x762D 5396 bytes
SHA-256: c1f86aeee97cdaafa11b25a44e6fb2c3cf6c02204c892821dba9f97ffb307672
font_01_sfnt_off00008868.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8868 10608 bytes
SHA-256: d557d1848bf0907f305c0f6e3bebca11cba9edd6561fa58a70363f24cc7d077c
font_02_sfnt_off0000abfa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xABFA 16100 bytes
SHA-256: b59afbb2f683942213df284fd86cd9422ada0c5f1ffac7698db8c94a40390bc4

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