Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a2ae44a2bd296a0…

MALICIOUS

PDF

49.3 KB Created: 2020-08-08 01:10:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c6f227295786a8f7843f15c34cd57b3a SHA-1: 1ef21542143b6c1783a1dffcaef295a232f9a84a SHA-256: 2a2ae44a2bd296a03002f40a7147f12bc02883ba0fe1d4fd1f78ef141dff4b3c
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a large number of embedded links, constituting a link farm designed to improve search engine rankings. One of these links, https://ttraff.cc/pify?keyword=pierwotna+endoprotezoplastyka+stawu+kolanowego+pdf, redirects to known malicious infrastructure. The document body itself is heavily obfuscated and appears to contain text related to medical procedures, likely as a lure. No scripts were extracted from this sample.

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.cc/pify?keyword=pierwotna+endoprotezoplastyka+stawu+kolanowego+pdf In PDF document text
    • http://xobef.escoria.com.ar/uploads/1/3/0/7/130776542/ed623292be7636b.pdfIn PDF document text
    • http://files.lisaguice.net/uploads/1/3/1/4/131453870/wowilozif-nakupakuzun-rezima-lozejiw.pdfIn PDF document text
    • http://naxev.2018flyballnationals.org/uploads/1/3/1/4/131483337/raxoviguf_madonodaz_tuvuwunuveli.pdfIn PDF document text
    • http://files.suepaton.net/uploads/1/3/2/6/132695329/widavaf.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/1/0433/0396/0731/files/beyond_compare_tutorial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7945/1289/files/bsc_physics_honours_books_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2281/0268/files/xatelajapoxuruzogumo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6107/6375/files/27500288683.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2945/5271/files/41808264383.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9769/9992/files/is_mcreator_safe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9199/2481/files/10465134773.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3510/6203/files/a_woman_of_no_importance.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2013/9170/files/tiwisikize.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1740/4573/files/3536419804.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6107/6387/files/wokoditez.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_off00007f64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F64 5520 bytes
SHA-256: 77e77f5cf637e7814a1503637d940978b87dffbe88fe51ae0df5382db4da3d85
font_01_sfnt_off0000926c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x926C 11528 bytes
SHA-256: 4fb57ffabc701e679098ebda147159e72b2bc948eb5a68a84cd2dce34421d03a

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