Malicious PDF — malware analysis report

Static analysis result for SHA-256 828f17f2d71b65fe…

MALICIOUS

PDF

41.9 KB Created: 2020-08-24 06:55:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b628dc55d6f635d49331793922c7c064 SHA-1: 2c6f1e5ece8b6caf2867c6d458e69d411fe5224f SHA-256: 828f17f2d71b65fe78b2eb4ceb0d3c7dd6814be690a4773068ec6b2830d73166
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links, including one pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'Android apps that give you money' and the malicious URL, suggesting a phishing or scam lure. The presence of numerous external PDF links, many hosted on Shopify, indicates a link farm designed to attract traffic.

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=android+apps+that+give+you+money In PDF document text
    • http://files.dyw-edinmideast.com/uploads/1/3/1/3/131379615/wesuruwiwogonapop.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/1/0434/2949/4936/files/usa_time_zone_chart.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7829/5450/files/gifikitoxotubezikore.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4462/5822/files/17749604492.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/76423385748.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/0764/3545/files/vasculitis_classification.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9496/6429/files/bikejojujikibaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/20424522606.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2518/7491/files/86514640368.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6542/6598/files/mujobuviriwesizafasezow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7704/2337/files/21656928194.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/9588/3675/files/inorganic_synthesis_and_chemical_nomenclature_report.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_off00006472.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6472 5492 bytes
SHA-256: f85ce75d466a7e8e3ea3f06b748ddde5efc49b9c87a98e117727ce924261fe2d
font_01_sfnt_off000076fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76FE 10440 bytes
SHA-256: bfd339f4e0d5cceb0d4d5a1a41e23f6e2f1150ea367eeb20340c39f4428c4472

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