Malicious PDF — malware analysis report

Static analysis result for SHA-256 488fa62809c360b0…

MALICIOUS

PDF

38.6 KB Created: 2020-08-11 15:29:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c0351275fcd77063cfdba62004e971d4 SHA-1: 43cda86a961eaf9b75437200e6a678e2634912ac SHA-256: 488fa62809c360b0fc3c08f402e9689470db4d8fe802099066a57039449077ce
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 of which point to benign Shopify domains, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains the malicious URL and appears to be a lure for a free PDF download. This suggests the primary goal is to redirect users to malicious infrastructure.

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.ru/pify?keyword=architect+s+studio+companion+pdf+free In PDF document text
    • http://files.motisbusinesscentre.com/uploads/1/3/2/7/132740327/3625901.pdfIn PDF document text
    • http://files.oscarconstruction1.com/uploads/1/3/2/6/132681464/1994782.pdfIn PDF document text
    • http://files.americanenglishsounds.net/uploads/1/3/0/7/130739202/rebogabije.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/1/0429/0206/1215/files/curso_de_adestramento_canino.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2871/6439/files/1308412124.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8668/3037/files/lirolezosaxuroveb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1802/5122/files/organic_experiments_williamson_9th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5654/5433/files/wubokepa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4228/3432/files/55047859367.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2732/5343/files/77200250961.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3437/0470/files/arti_simbol_flowchart.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0838/5439/files/34138509562.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/51730359377.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2589/1479/files/google_classroom_tutorial_em_portugues.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2520/2325/files/26786666356.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9500/7137/files/mimabo.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 3

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_off000056c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x56C9 5352 bytes
SHA-256: 954f429f73846206a41e2139b6757dcd6544ff0101172ec500cac34001c67b60
font_01_sfnt_off000068d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68D2 10304 bytes
SHA-256: 99882731b8f614aeef099d32ffcc17c640144b65bc6a825be32be74844b773e3

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