Malicious PDF — malware analysis report

Static analysis result for SHA-256 34c464753a47d992…

MALICIOUS

PDF

41.8 KB Created: 2020-10-30 03:10:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 1760d075ab7ee3515c4392610f86ff02 SHA-1: d7c91fc2f277cf8b001906ae1b76baad9614a24e SHA-256: 34c464753a47d99225210dc085edb317569ba45081372801b33b473510fdc586
162 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm, routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

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.
  • 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
  • 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://gettraff.ru/123?keyword=audio+lingual+method+activities In PDF document text
    • https://xalipifizipig.weebly.com/uploads/1/3/1/3/131379045/gejikekibe.pdfIn PDF document text
    • https://zasigusedorel.weebly.com/uploads/1/3/4/3/134386673/21feb7d193af231.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0476/8628/7519/files/menalafojikema.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2748876c-5313-4388-9441-27989e85c118/43651981797.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0492/3867/1526/files/riavviare_in_modalit_provvisoria_android.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0f1a9d5c-b911-4066-a2ed-c9b3b8302f73/69376125556.pdfIn PDF document text
    • https://s3.amazonaws.com/sajatesawodiji/african_countries_and_their_capitals_in_alphabetical_order.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7507/5225/files/embedded_clauses_worksheet_ks3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/9962/8724/files/baroraruwenamavew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5144/1560/files/wafexutilira.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/0621/2257/files/ethiopian_fiction_books.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_off00006556.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6556 5304 bytes
SHA-256: b5c78b2db497c689f43c7788b3d6e46313792d1c9ee5d9d1f857d93dfea40c4e
font_01_sfnt_off00007747.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7747 10352 bytes
SHA-256: 04b0436c5dcf38cdbc813fbba840fbc33b18c88ab416790ff2e81540f6d0c8fc

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