Malicious PDF — malware analysis report

Static analysis result for SHA-256 954c80543aad6cd3…

MALICIOUS

PDF

42.7 KB Created: 2020-08-06 23:28:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5a1aa93cb1b520ce2e8b7fe929a88faf SHA-1: c31542b355d26ffd4077907d3ba05f15e69f4e7e SHA-256: 954c80543aad6cd312d79b21ccbd5b1a32214a2f003cc24786fa7feb07ccc5e0
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a redirector service. The document body, though heavily obfuscated, contains text related to 'AI and machine learning books pdf' and a URL that appears to be a lure. The primary heuristic indicates the PDF links to known malicious redirector infrastructure, suggesting an attempt to lead the user to a malicious site.

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=ai+and+machine+learning+books+pdf In PDF document text
    • http://files.tinalouisecalidancecostumes.com/uploads/1/3/1/6/131606349/kewotixotixumaneviw.pdfIn PDF document text
    • http://files.toasttoroast.com/uploads/1/3/1/6/131636946/jowetudoxofonunin.pdfIn PDF document text
    • http://files.nicholasbajisphotography.com/uploads/1/3/1/0/131070861/323e017.pdfIn PDF document text
    • http://files.ann-c-colley.com/uploads/1/3/1/3/131397996/906505.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/1/0435/9657/8975/files/online_barcode_generator417.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9273/8201/files/tatolimowitivizejo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7900/7384/files/billetes_argentinos_para_imprimir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8064/6807/files/migezenanajelo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6073/9752/files/5828439519.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2685/8662/files/57410813027.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8184/3353/files/34279979631.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7353/6149/files/archi_graphic_an_infographic_look_at_architecture_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3093/7751/files/78219561817.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7179/8424/files/pusijazukoxedij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3121/5780/files/63367859186.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9548/1750/files/xolerosupofamufetifimoju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6130/4728/files/zidatulowigaxevavo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3951/5039/files/wusovu.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_off000067c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67C2 5760 bytes
SHA-256: e6a2c1fcc0aaa01d88ab3a231bbbf41845eb79b10cb0a1f78e3c08d56af94437
font_01_sfnt_off00007b36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B36 10120 bytes
SHA-256: 67a0aec17344b099feebfc652fc12b9d3ff690fb9aa18b830737a90743255371

Open this report in the interactive analyzer, or submit your own file for analysis.