Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0cc31ec1ca13d6a…

MALICIOUS

PDF

65.7 KB Created: 2020-08-22 21:42:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d8e019f47cb38a3f5f36309b3df51ed2 SHA-1: 7db39b1d6bac67e629c2dbcb0c58fb5940cfffa0 SHA-256: d0cc31ec1ca13d6a6caa1874fa40c8f2ae54053a5d068b4ae84728287e8543d1
202 Risk Score

Malware Insights

MITRE ATT&CK
T1200 Hardware Add-in T1566.001 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a link farm and a malicious redirector. The document body, though heavily obfuscated, contains a URL that points to a malicious redirector, which is likely intended to lead the user to a malicious download or phishing page. The presence of a 'download button' heuristic further supports this. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • 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://ttraff.cc/pify?keyword=android+studio+adb+path+linux In PDF document text
    • http://files.ablankanvas.com/uploads/1/3/1/4/131438427/furodi.pdfIn PDF document text
    • http://files.gistrummers.com/uploads/1/3/0/8/130874305/56fa3e71ce.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/1/0431/6545/0391/files/65005522451.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2834/9079/files/desufomanorixewusezudo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1652/6752/files/rufiluzazenawogepejoki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5541/5445/files/sleep_and_academic_performance_theory.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7433/8454/files/javevuzomaxokejovugonodu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8909/1998/files/86020703182.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5448/1058/files/83410662138.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/90209356055.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0128/2719/files/terraria_armored_cavefish.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2644/6496/files/cepacaina_spray_bula.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 3

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_off0000c243.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC243 5244 bytes
SHA-256: 154e661cbf1dfc7c4d1fe763cbb2140dd5e109b567808ae02a7cc0f6ecb8f587
font_01_sfnt_off0000d408.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD408 11140 bytes
SHA-256: 2523ecd6e2b2c6c1d87a836f6ee1855d3c90c9500caf5910f172743f5e376d9d

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