Malicious PDF — malware analysis report

Static analysis result for SHA-256 0671a1ca035f33ab…

MALICIOUS

PDF

41.8 KB Created: 2020-08-08 23:40:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b2000f718311c5fababbad0cb9855ba9 SHA-1: fa1dec5b574d0ebb6aaa0d355aeb89311b623e95 SHA-256: 0671a1ca035f33abd9978ed475f2b9f3244185645a2e1523595a7568adf0cc78
194 Risk Score

Malware Insights

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

The PDF contains numerous links to external resources, including a primary redirector at 'https://ttraff.com/pify?keyword=spring+framework+black+book+pdf'. This indicates a likely attempt to direct users to malicious infrastructure, potentially for phishing or malware delivery. The ML classifier also strongly flagged this PDF as malicious.

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=spring+framework+black+book+pdf In PDF document text
    • http://files.garjones.com.au/uploads/1/3/0/7/130739146/rinobuze_wujosugivu.pdfIn PDF document text
    • http://files.singularinsight.com/uploads/1/3/2/3/132302787/4827848.pdfIn PDF document text
    • http://files.oksirconnect.com/uploads/1/3/2/6/132695836/7137915.pdfIn PDF document text
    • http://komun.viva-musica.co.uk/uploads/1/3/0/7/130776485/a2902d21e7f44.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/1/0431/9431/9009/files/69736858148.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6891/4838/files/31046347102.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0755/8310/files/80845691137.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9751/3381/files/81882540904.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3463/2607/files/66198950952.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/3505/5512/files/pengertian_bilangan_biner.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2868/3672/files/arduino_string_array.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1458/6517/files/lexopabevaroxunisevepon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7162/6659/files/82252113415.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9408/9635/files/98290284804.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2287/5797/files/14158949671.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4438/0578/files/sufejogadagarala.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7182/3262/files/gesufifivezolu.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 6

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_off00006478.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6478 5696 bytes
SHA-256: 38154980fa3ac7137ee39b279c14575c9deac0789fb149999c5e2ac4710ae780
font_01_sfnt_off000077d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77D8 10156 bytes
SHA-256: 433fa40675f0366410a44b568da7ce570a34ccd372b464bd14924d4faf0aed22

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