Malicious PDF — malware analysis report

Static analysis result for SHA-256 63a19c5db1826e02…

MALICIOUS

PDF

44.9 KB Created: 2020-08-19 08:45:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6f07f9e5def34af850abf832addfdfaf SHA-1: 9c418394a7befa64eb903d3d37a5191bed95219c SHA-256: 63a19c5db1826e02f5fe248847bdd53944974f61da315471db82edd67d0eb23a
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to a redirector service (ttraff.com) which is flagged as malicious. The document body, though heavily obfuscated, contains the same redirector URL and a benign-looking PDF link, suggesting a lure to a malicious site. 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=informatie+despre+columna+lui+traian In PDF document text
    • http://files.zionsvillechamber.org/uploads/1/3/1/8/131856353/pigazodozuzuv.pdfIn PDF document text
    • http://files.birth-roots.co.uk/uploads/1/3/1/4/131437454/pifesup.pdfIn PDF document text
    • http://files.cubeditpos.com/uploads/1/3/1/1/131163669/kivuwojojunoxa.pdfIn PDF document text
    • http://files.kindredliveband.com/uploads/1/3/0/9/130969241/nageduz.pdfIn PDF document text
    • http://files.bhexclusivecollections.com/uploads/1/3/1/4/131437421/fivek_jedojixogi.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/1/0438/7838/3771/files/millennials_definicion.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8437/3406/files/how_do_you_type_a_smiley_face.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6972/5085/files/bjp4_self-_check_2._3_expressions1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/3846/2372/files/27704976726.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2567/7982/files/37021709014.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8311/2341/files/99140634350.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4000/5541/files/bits_and_bytes_ace_academy_electrical.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1806/7876/files/xijejosinoguxinowebebaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3799/0805/files/libros_aprender_frances_gratis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8552/1311/files/15646681186.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5919/1712/files/38319693582.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7328/2983/files/girunifiviluvesesitusapu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5660/9957/files/regular_plural_nouns_worksheets.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_off0000700c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x700C 5236 bytes
SHA-256: aefc127f70730089b1049bd889003eb1a3aac3a0edac3f44443cc3a2eb1ea118
font_01_sfnt_off000081ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81BA 10788 bytes
SHA-256: 354d1e73d5d475113400ffc652be76aaa66b5b38a35a7f16cd132dba4fb4c327

Open this report in the interactive analyzer, or submit your own file for analysis.