Malicious PDF — malware analysis report

Static analysis result for SHA-256 bdbc6097e4ec96b3…

MALICIOUS

PDF

43.5 KB Created: 2020-08-02 01:41:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5b4f2f8cb3489565b9148a4a94adb516 SHA-1: a49e102538a891b01af5407c06bbc5b71ea59b0c SHA-256: bdbc6097e4ec96b304a20e5f4e69b729fa6e2ba9bd0e66dcf52147dc724ce05a
194 Risk Score

Malware Insights

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

The PDF file contains a mass external link farm, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. The primary malicious URL is https://ttraff.com/pify?keyword=bicycle+repair+pdf. The document body, though heavily obfuscated, contains references to 'bicycle repair pdf' and the authoring application 'wkhtmltopdf', suggesting a lure to disguise the malicious intent. No scripts were extracted from this sample.

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.com/pify?keyword=bicycle+repair+pdf In PDF document text
    • http://files.notesmove.com/uploads/1/3/0/8/130874265/fiwesipav_xadixixulir_jomudobejilusu.pdfIn PDF document text
    • http://files.pushingupdaisies.org/uploads/1/3/1/4/131452811/nodosutisirelabozebu.pdfIn PDF document text
    • http://files.shannonroubicek.com/uploads/1/3/2/7/132740288/1dc12591f4c09b0.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/1/0428/8688/9625/files/kufewatifijogikubame.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8581/6217/files/62522314873.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3077/2901/files/vabisofatirobume.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5402/3327/files/bexamubum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4016/9384/files/1881596912.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9095/9766/files/70592741854.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3708/2271/files/tulipizogoduvubesozadabex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5928/0022/files/16904801087.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3239/5426/files/85326329726.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/9204741539.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9216/5279/files/laxozoxowubapove.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7243/7910/files/40570607751.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3802/3592/files/buribijefejo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0163/4213/files/fewuwerufexin.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_off00006d57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D57 5124 bytes
SHA-256: 1eb39baced9322f1f45f3410794df4f4297129c7045aaddded8876498cc039d2
font_01_sfnt_off00007ee2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EE2 10020 bytes
SHA-256: ad94602e2d0618706eb738fb8ffa165e86fb35ef5e42d03a4ddee2952d152429

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