Malicious PDF — malware analysis report

Static analysis result for SHA-256 118ec7281570e0cc…

MALICIOUS

PDF

43.7 KB Created: 2020-08-06 05:36:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 542939e718f273371b0ecb0f76827194 SHA-1: cde30878303aafa6049cb140bee5c42ecd6c22c3 SHA-256: 118ec7281570e0cc372ab1f3788abd7eb77e0b24dbbc75a747ed6ef053143488
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple links to a redirector service, which is designed to obscure the final destination and potentially lead users to malicious content. The document body and heuristics indicate a lure for a 'free download' of a PDF, likely a phishing or scam attempt. The presence of numerous external links suggests an attempt to manipulate search engine results or create a link farm for SEO purposes, ultimately directing users to potentially harmful 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.com/pify?keyword=clinical+anatomy+by+systems+pdf+download In PDF document text
    • http://files.jenwahintuition.com/uploads/1/3/1/3/131381006/41a12ca2bfad29.pdfIn PDF document text
    • http://files.msohomes.com/uploads/1/3/0/8/130874477/maxibikub.pdfIn PDF document text
    • http://files.ziontbc.com/uploads/1/3/1/3/131380397/vuxamijezat_volifulisowogu_jemefonim.pdfIn PDF document text
    • http://files.annagayatri.com/uploads/1/3/0/7/130776063/xaleme_pasajuzafev.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/1/0435/5771/6119/files/23100889270.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7367/4142/files/merulukulekolikefipitatot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9597/2256/files/dijotekegewerom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bujebunefevefosilipepeju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6481/9874/files/larox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wefudebavisizaku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zugazad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0726/2367/files/97222405334.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5788/2022/files/getaranomuzojowinanamifaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0131/4454/files/42811347961.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3640/8982/files/55105082879.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_off00006c79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C79 5444 bytes
SHA-256: b3135d937b1f0362be90923041f3a2eba87ec67029ea7be68fbb03030d3ee251
font_01_sfnt_off00007f00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F00 10144 bytes
SHA-256: 6122204544b62095f47af9a15292c2d54432b218391da386084e6b8e9ad35289

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