Malicious PDF — malware analysis report

Static analysis result for SHA-256 162725fced3a2fed…

MALICIOUS

PDF

45.5 KB Created: 2020-08-01 04:39:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 519628e6ebfb99934db2c7d46baed551 SHA-1: 0b4c7fcc243e1cfe96168db4168478ca7bcb6c93 SHA-256: 162725fced3a2fed4816ae8a093475d8bf41ad4917a68af353446e2aa759b9e3
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a critical heuristic firing indicating it redirects to known malicious infrastructure. The document body text and heuristics suggest a lure for users to download a PDF form, which is likely a phishing or malware distribution attempt. The ML classifier strongly supports the malicious verdict.

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=rst+form+pdf In PDF document text
    • http://files.closdecandele.com/uploads/1/3/1/8/131856624/29b12.pdfIn PDF document text
    • http://files.pattieholyilenda.com/uploads/1/3/0/7/130740367/vadujuwozagoj_tuvutafe_sanikebimigos_xinuxawi.pdfIn PDF document text
    • http://files.beetrax.com/uploads/1/3/1/4/131483217/luwinejiminikamaxe.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9443/4202/files/tarebumaxusodegadagipolo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3070/8385/files/dugilukebulusifuzoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5661/0976/files/4534448064.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/78682713185.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6869/4432/files/60708279590.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2325/4179/files/63053831652.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3258/4098/files/jugijagisaweg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9324/5600/files/jowodemogul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5784/8224/files/43260759829.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5601/9109/files/newilabevotosalefoludegu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/puneson.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6241/1935/files/jerinelemebuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7450/2312/files/81112676188.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000683f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x683F 4468 bytes
SHA-256: e81d7d6884ca04c62c80a6d5c4c6edbc9e4939dee9b5657dcd1080c343d6d2ba
font_01_sfnt_off00007763.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7763 11060 bytes
SHA-256: ad4e0f513a23db20da22157f1e6edf9cc49067fe06f3ac03590deb1ab639779b
font_02_sfnt_off00009b56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B56 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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