Malicious PDF — malware analysis report

Static analysis result for SHA-256 40b1d8689b589997…

MALICIOUS

PDF

45.5 KB Created: 2020-08-15 14:42:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2cc479fae621825752be04def7e8f304 SHA-1: 13f0c3881ccbb07cb5cdf8f3cea129b5d12bdb87 SHA-256: 40b1d8689b589997dcd421270ca36ee487cc2996a351f196a60325bf2640e8d8
202 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with one link pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the text 'Apexogenesis journal pdf' and the malicious URL, suggesting a lure to trick users into downloading malicious content disguised as an academic paper. The presence of numerous Shopify-hosted PDF links further supports the SEO link farm heuristic.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=apexogenesis+journal+pdf In PDF document text
    • http://files.writeworkstutoring.com/uploads/1/3/0/7/130739831/2180529.pdfIn PDF document text
    • http://files.malvoncollies.com/uploads/1/3/1/4/131408581/xibapijudunewij.pdfIn PDF document text
    • http://files.fragilebutunbroken.com/uploads/1/3/1/4/131406722/990179.pdfIn PDF document text
    • http://files.smockadoo.com/uploads/1/3/1/4/131452804/8411613.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/1/0434/7048/7702/files/44248501645.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5188/4445/files/junefowagomimopijitusu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7143/9001/files/gutugebupetamovu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4498/6280/files/retail_sales_assistant_job_description.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/20880330559.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8085/7253/files/alia_bhatt_songs_list_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6616/2341/files/jawariguruwarosoxikoju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mujunevuduw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5583/1445/files/marupedalovubazugene.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5879/7463/files/kexosararawivexonito.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8627/4967/files/93656755240.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5900/4070/files/gapadodogorobese.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 4

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_off00007405.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7405 5344 bytes
SHA-256: ce6956e85ea03ffb09e41754e299a04b9ab9f6ae747147a0d611ad5b3d3f7fbe
font_01_sfnt_off0000864c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x864C 10264 bytes
SHA-256: c8e9381eb454ce341572df6ec98073c65aacd18439d2a23ae5374d856ed82f67

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