Malicious PDF — malware analysis report

Static analysis result for SHA-256 137eb4e72dfc13fe…

MALICIOUS

PDF

45.4 KB Created: 2020-08-24 08:59:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3b321df682624af103ddc61416d8ce86 SHA-1: 7a5ee7463fca9b5eb1f055ff12d38c6443be4408 SHA-256: 137eb4e72dfc13fe800e35dfef0c2592ac7fa6c77ce92e0b3d6df51747017260
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to a redirector service, suggesting a link farm or phishing attempt. The primary redirector URL is associated with malicious activity. While no scripts were explicitly extracted, the PDF structure and embedded links indicate an attempt to redirect users to potentially harmful content, likely for phishing or malware distribution.

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=daily+behavior+chart+template+for+kindergarten In PDF document text
    • http://files.veescape.com/uploads/1/3/2/7/132740181/8034747.pdfIn PDF document text
    • http://files.happi-me.org/uploads/1/3/1/3/131380054/kewum.pdfIn PDF document text
    • http://files.pennstatecsl.com/uploads/1/3/1/3/131398455/tajuwusesomomij_rovuve_vosurozu_bovukuzawawesol.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/1/0435/7970/3451/files/vipagaxorulebivamabezot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2072/1055/files/95549446701.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/0834/9592/files/93481042850.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5939/6254/files/get_your_guide_last_supper_tour.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1996/8417/files/55765804086.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3514/7933/files/83590003508.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2137/7434/files/calidad_total_tqm.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0654/8377/files/black_temple_entrance.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4533/6726/files/17583949967.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3787/6639/files/bunny_ears_template_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6859/6123/files/pitewo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5298/9607/files/dilevunukiwu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6612/8549/files/53674923210.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_off00007326.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7326 5756 bytes
SHA-256: f452897cd982c4b75d72a9bd0f931983e2cfe77db0d9abdcedde5600eb828fab
font_01_sfnt_off000086a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86A7 9876 bytes
SHA-256: 7a094a5c4f955f839917c5ca82acc33e432e986debcd1500cd0a1a113b81547f

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