Malicious PDF — malware analysis report

Static analysis result for SHA-256 dbdc6119406bfba5…

MALICIOUS

PDF

38.5 KB Created: 2020-08-05 04:26:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d9d14f097e9d91b238871c5b2e34f9bb SHA-1: b357414936094dc09fca1f47a9b9bd9c8052b818 SHA-256: dbdc6119406bfba5b8c9e6c054f47531b5d7a4821e0e14ce758eac82094ef78e
194 Risk Score

Malware Insights

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

The PDF contains a link to a redirector service, which is a common technique for distributing malware or phishing pages. The document body and embedded links suggest a lure to download a fake technical document, likely to trick users into visiting malicious sites. The presence of numerous external PDF links further indicates a link farm SEO tactic to improve search engine ranking for malicious content.

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=aiag+vda+fmea+handbook+pdf+2020+free+download In PDF document text
    • http://files.cashmereskinandbody.com/uploads/1/3/1/8/131856713/wumufegedadusos.pdfIn PDF document text
    • http://files.isrwaterselfrescue.com/uploads/1/3/1/3/131382721/27637.pdfIn PDF document text
    • http://files.gwe-design.com/uploads/1/3/1/3/131383045/219039.pdfIn PDF document text
    • http://files.quiltingshanty.com/uploads/1/3/1/8/131856333/06c1c00.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/1/0429/6769/5523/files/bijanotaje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1931/3053/files/xewin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/viruxirekosarobavogerij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7096/3350/files/duwilasaretutalinabegaxar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8722/3198/files/namojugedapiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4224/1688/files/lesezibivupu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0006/0310/files/diamond_video_capture.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7727/0678/files/fefemozukirulusagitokepe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2755/2661/files/beromuxoletevifuga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8974/0441/files/fidikazebijupujux.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005775.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5775 5896 bytes
SHA-256: 99afd061acde7d6421b6600d5f84f5b82e945311b13b7ef4e641064814882832
font_01_sfnt_off00006b74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B74 9756 bytes
SHA-256: 2ad12e3657b5dad74052dfdf6f1118ed1a203f01c0d65b69bbcba68e78b2a1b9

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