Malicious PDF — malware analysis report

Static analysis result for SHA-256 404cc627b665cb36…

MALICIOUS

PDF

51.8 KB Created: 2020-08-07 19:16:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2395a5c5d66f0abef4e2d06ab7806b74 SHA-1: e53d60b762b34a012b4ed463537c6676ae2103de SHA-256: 404cc627b665cb367758e0f2fc10c1c31892d703c2478d10daae147067b9e27e
194 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a malicious URL, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains the same malicious URL. The PDF_SEO_LINK_FARM heuristic indicates a large number of external links, suggesting a link farm or SEO poisoning attempt. The ML_NYX_PDF_MALICIOUS heuristic strongly indicates malicious intent.

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=blossoms+of+the+savannah+questions+pdf In PDF document text
    • http://files.thecircusdrummer.com/uploads/1/3/0/7/130739971/fiwife.pdfIn PDF document text
    • http://files.universalmatrixhi.com/uploads/1/3/0/7/130776225/b8c3e.pdfIn PDF document text
    • http://jegarakob.dsmtoolworks.com/uploads/1/3/1/4/131453674/fugevujajabi-navogopa-jevosebutof.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/1/0437/0087/9510/files/tezeferefuwu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7222/5442/files/wobuligivuxegiwexux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8693/7248/files/85270807940.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3631/9639/files/41855322545.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6993/9607/files/gefipenuxanorugif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6028/2023/files/navowaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/jepomosojavadoji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/9906/8318/files/delete_branch_from_github.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7804/1244/files/50174128792.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6109/2250/files/adobe_scan_ocr.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8413/6086/files/36952353696.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/7072/3998/files/vuvuvut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9375/2997/files/71174249812.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 5

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_off00007f4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F4E 5300 bytes
SHA-256: f096069b79a2c7512e95c7e84dd8a3c7f83e47323b41c83832088242539ddaf4
font_01_sfnt_off00009135.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9135 10172 bytes
SHA-256: 6784721a790b48cd5573b568271f883cb7aef36428997c0523854400c5625bb0
font_02_sfnt_off0000b3c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB3C8 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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