Malicious PDF — malware analysis report

Static analysis result for SHA-256 a27d57845a23f547…

MALICIOUS

PDF

121.1 KB Created: 2020-08-20 02:03:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 22ff62f986c2662413e8c1c92a82004f SHA-1: 23747bed3904a73e7fd04794425301c401de7944 SHA-256: a27d57845a23f547e3cda09b19291fd3bd7cb9e7f7d5508ad0ea34985c905583
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a link that redirects to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains the target URL. The PDF_SEO_LINK_FARM heuristic suggests the document is part of a link farm designed to attract traffic. The ML_NYX_PDF_MALICIOUS classifier strongly supports the malicious nature of this PDF.

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://ttraff.cc/pify?keyword=2014+ford+escape+se+ecoboost+owners+manual In PDF document text
    • http://zusuxokod.lifequestkids.com/uploads/1/3/0/8/130813747/9154125.pdfIn PDF document text
    • http://files.fountainpro.com/uploads/1/3/0/7/130775375/43a124a24a6.pdfIn PDF document text
    • http://files.thedaisyhouse.net/uploads/1/3/1/6/131606174/botabirimenuvufogap.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/1/0432/6768/6556/files/gibigisujarezalifemugezam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8147/9832/files/agriculture_mcqs_books.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5159/5429/files/blender_3d_tutorial_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/4316/4058/files/best_app_for_android_reddit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2207/3506/files/97985699108.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3640/2079/files/73386548655.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6749/7880/files/botimapabalonej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2891/4074/files/rilubaramakadi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9959/4656/files/13816805390.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 1

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_off00019e34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19E34 5852 bytes
SHA-256: 0fb22863f6f35a39d727228725e6fb3b6ef2f5aa282f910e8c0015b365003122
font_01_sfnt_off0001b208.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B208 10924 bytes
SHA-256: 9b707603dbb0608e932bf7cda0e7cdeb68584f4a8423a824d1b3555e9adb0019

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