Malicious PDF — malware analysis report

Static analysis result for SHA-256 1fbc95f7ebcb2e0b…

MALICIOUS

PDF

44.3 KB Created: 2020-08-05 15:17:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5e4f6647daf3cddc7b52a518caeac954 SHA-1: 5b53ccbd2d78e8893e017e03024c4cb01785b6e9 SHA-256: 1fbc95f7ebcb2e0b48052f06241702a5f247f9bbf27d7a21ad1ad462628c71ea
194 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many pointing to benign Shopify URLs, but one critical link directs to a known malicious redirector. The document body text, while garbled, includes the target URL, suggesting the primary purpose is to drive traffic to this malicious site. No scripts were extracted, and the PDF structure itself is the vector for the attack.

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=intermezzo+cavalleria+rusticana+string+quartet+pdf In PDF document text
    • http://files.embracemyanmar.com/uploads/1/3/0/8/130814411/koludulasamora-bujozejon-tuvorim.pdfIn PDF document text
    • http://files.almeria-estates-and-realty.com/uploads/1/3/1/4/131437351/fefozo.pdfIn PDF document text
    • http://files.visitpresov.com/uploads/1/3/2/3/132302780/xitulen-sejuwu-kagefewufori.pdfIn PDF document text
    • http://files.brazenshopandstudio.com/uploads/1/3/0/7/130739783/vajatolupimamowez.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/1/0428/6981/7511/files/71117563033.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3077/3913/files/turim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3273/1030/files/duxejagotaxipijesufidoseg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7093/0600/files/43135407542.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7318/2625/files/xirasimewusuvino.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5026/9849/files/56945459511.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4469/2383/files/78056736969.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0120/9251/files/31256341569.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2086/0064/files/59737558989.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6810/4602/files/nujadajifusaropazok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9019/8180/files/mokilabovonuka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3360/7842/files/feduluwunepoxofa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2207/4534/files/vafatireloraseburimorox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/73633131036.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 8

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_off00006da7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DA7 5648 bytes
SHA-256: cc9cb159098508840097275a5cc75392c1fd0eb689faa527605b81fd7d34db7f
font_01_sfnt_off000080cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80CF 10312 bytes
SHA-256: f33b97de02e7048cef089c3fa377aca3cf2478637bb9806d1a09b9528a7e00a2

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