Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd0c5c4520ad261d…

MALICIOUS

PDF

41.1 KB Created: 2020-08-17 01:14:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c790e8c94bec6e7f39742b8fa6910f1d SHA-1: 6c77372e0eb7d46520f8d9edff3907e11af1f94e SHA-256: bd0c5c4520ad261d7dc9e3780feaa3b65eecbfeaf92aca45ad25f30c7b2944dc
202 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one specifically identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to 'bubble chart template xls' and a URL that matches the malicious redirector. This suggests a social engineering attack aiming to trick users into visiting malicious sites under the guise of downloading a useful template.

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=bubble+chart+template+xls In PDF document text
    • http://files.centerforhuman-earthrestoration.com/uploads/1/3/1/3/131380847/sewug_buvibarikubu_libunikejole_rilonap.pdfIn PDF document text
    • http://filox.stewartsrestoration.com/uploads/1/3/1/3/131381428/c83e567218f3f4.pdfIn PDF document text
    • http://juzemi.chapelcafe.co.uk/uploads/1/3/1/3/131381720/8754932.pdfIn PDF document text
    • http://files.njaje.org/uploads/1/3/2/8/132814272/1775429.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/1/0438/1619/0112/files/gigulenik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9508/9559/files/buxidewizuberigeb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6698/1542/files/pho_aefi_reporting_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7101/2006/files/corrosion_of_austenitic_stainless_steel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5239/9773/files/59143436195.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8938/5885/files/13522501645.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9617/7816/files/extended_metaphor_poem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9842/3967/files/68545090756.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_off00006028.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6028 5432 bytes
SHA-256: 640bc75a8bacff0d3953c832ddb9e760f81a3744cdc9c61453e43ee1d66537e3
font_01_sfnt_off00007279.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7279 10960 bytes
SHA-256: 48d7b94f93459b417491d5abfc1f6e88fba498409ee9a698ce677f3a4c64e2dc

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