Malicious PDF — malware analysis report

Static analysis result for SHA-256 71bed28fe9dace3c…

MALICIOUS

PDF

39.4 KB Created: 2020-08-18 12:54:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6a122a36cd32b1f14c63c2c45fb3c231 SHA-1: 74acfec198a6905d68af3e04ebbb1be7bd598350 SHA-256: 71bed28fe9dace3c4bcf7c011fe405b3275402c6156c0e65b46848fff870621d
194 Risk Score

Malware Insights

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

The PDF contains a link farm and redirects to a known malicious redirector, suggesting a phishing or scam attempt. The embedded URLs and the document body text, which includes the malicious URL, indicate the primary goal is to redirect the user to a site offering 'free templates' which likely leads to malware or further phishing. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

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=artisteer+templates+free In PDF document text
    • http://vaduf.quietgovernmentmen.com/uploads/1/3/0/7/130739063/zuvobute.pdfIn PDF document text
    • http://files.selplasticpallet.com/uploads/1/3/2/3/132303229/bitizugele.pdfIn PDF document text
    • http://files.mrsmuenks.com/uploads/1/3/1/4/131436967/d1c70d3a5d4d991.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/1/0437/3794/0122/files/kopadokisabexonalufagate.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7251/1386/files/kisagomelisebalofuzov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7496/8986/files/humphreys_introduction_to_lie_algebras_and_representation_theory.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1509/3920/files/77776593869.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9437/4555/files/vaminakitokekev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7410/0127/files/3692301532.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4772/1882/files/falibeso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2929/1427/files/geological_map_of_africa.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_off00005d5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D5D 5036 bytes
SHA-256: de067382a95fa95e4096a4a0bdcaf9133531917bad6e1955c050fd38c9906d07
font_01_sfnt_off00006e60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E60 10216 bytes
SHA-256: 1f21a748c8c793e7d865139c96f2656cebd8f03c9c833aab2dfc33da679e20b5

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