Malicious PDF — malware analysis report

Static analysis result for SHA-256 38dd831b9fc8f89d…

MALICIOUS

PDF

38.0 KB Created: 2020-08-12 00:58:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ab1e142a832ab82078be7c3236b08213 SHA-1: fd5016c1333925196d3425dc9b96838b6b103424 SHA-256: 38dd831b9fc8f89d3ec9734384d6b932f6bccb1a75975a390408b5cb486b734c
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. This suggests a tactic to disguise malicious activity within a seemingly benign link farm, ultimately leading users to harmful infrastructure. The ML classifier also strongly indicated maliciousness.

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.cc/pify?keyword=pdf+journal+marketing+management In PDF document text
    • http://files.chenowethbairddesign.com/uploads/1/3/1/8/131871894/kawal_fudomur.pdfIn PDF document text
    • http://files.n2everything.com/uploads/1/3/0/8/130813317/diminupapuxufak-zoxanakisogi-metemosane-logarobuze.pdfIn PDF document text
    • http://files.thoreauwayensemble.org/uploads/1/3/2/6/132681308/1790876.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/1/0432/8164/5736/files/mappa_turistica_bolzano.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7909/6728/files/simple_binary_tree_program_in_c.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/37604868145.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0107/7142/files/47994193515.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8161/9861/files/17828533674.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2885/7503/files/lofudomekub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5220/3161/files/verizon_channel_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tutokufumetuja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/5122/7048/files/58010701009.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4742/0066/files/jukegamik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5339/0743/files/kojedetojax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3835/0231/files/cdf_and_matlab.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_off0000548a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x548A 5188 bytes
SHA-256: e449a2f46045e2264a3bcda61d7961159a6b77dc55531c2cbe77a4d51aff60eb
font_01_sfnt_off00006628.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6628 11152 bytes
SHA-256: 3cfba0ec63393a5939be7b80881077b5a176a27bfd2bdff493f4ff2edcfb653a

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