Malicious PDF — malware analysis report

Static analysis result for SHA-256 7190e91caf14efd2…

MALICIOUS

PDF

42.5 KB Created: 2020-08-07 05:13:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d7382f18cc2e5f8380daf02726808e3b SHA-1: c179057bc50328d107ba3a6ecea351d3da72448d SHA-256: 7190e91caf14efd21382e3b5c00485afd791ef8c89dad992541a5143b873050a
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links designed to create a link farm, directing users to a redirector URL that is flagged as malicious. This suggests a phishing or scam attempt, likely to trick users into downloading further malware or visiting malicious sites. 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.com/pify?keyword=angielski+w+t%25C5%2582umaczeniach+gramatyka+4+pdf In PDF document text
    • http://files.catrinamain.com/uploads/1/3/1/3/131379594/veniboze_medogagigosoli.pdfIn PDF document text
    • http://files.thstofficial.com/uploads/1/3/0/7/130738700/8388610.pdfIn PDF document text
    • http://files.adelaide-pilates.com/uploads/1/3/0/7/130739761/zijupepojumoviziwese.pdfIn PDF document text
    • http://files.ncstateroleplay.com/uploads/1/3/0/9/130969204/todejexabukil.pdfIn PDF document text
    • http://files.healthandfitnesswtea.com/uploads/1/3/0/7/130740069/delujuraro-dikis-rinixafikox-vominaw.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/1/0435/2226/1143/files/wejepaparapuzuwob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9431/7981/files/bepuxirusevulogex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5358/0441/files/11501780145.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8672/5799/files/catalogo_de_cuentas_de_una_empresa_industrial_ejemplo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0013/3793/files/mp4_to_mkv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1121/1425/files/gawiwojen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6612/9574/files/wonesaxivupasunapidiwat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6952/1568/files/gesenuduzemibevogudisi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6998/7223/files/tevubelevuxavitelezodu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0558/3266/files/68694450347.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8818/3456/files/sivedupurupipawipurovo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6592/3992/files/32694841711.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2117/2897/files/xunirutazoliseselarupinu.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_off00006184.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6184 6008 bytes
SHA-256: 45768f738f542f6e9d4d9759876ee14a18cf90f2e2197a51db40020b216169bf
font_01_sfnt_off00007607.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7607 11480 bytes
SHA-256: 09f041d200204487a23ef09d24a9716ec268d2d02e1ceb31d93568863c784b40

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