Malicious PDF — malware analysis report

Static analysis result for SHA-256 28f2286dfc068380…

MALICIOUS

PDF

47.1 KB Created: 2020-08-07 11:44:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3b4f14a8104e425c10a607256705c29f SHA-1: 68a55915b190ab7949ccadc854ca493c63e0f837 SHA-256: 28f2286dfc068380555541d0acd06f77e8fcd460bd6b2fa03af8dd1755851feb
194 Risk Score

Malware Insights

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

The PDF contains a high number of embedded links, many of which point to a redirector service. The primary link identified, 'https://ttraff.cc/wb?keyword=english%20language%20and%20communication%20skills%20pdf%20download', is flagged as malicious. This suggests a phishing or social engineering attack aiming to redirect users to harmful content.

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/wb?keyword=english%20language%20and%20communication%20skills%20pdf%20download In PDF document text
    • http://files.lyonsbaskets.com/uploads/1/3/0/7/130776350/pumoribeziluginorige.pdfIn PDF document text
    • http://files.leeluummakeupartistry.com/uploads/1/3/1/3/131381204/6495412.pdfIn PDF document text
    • http://tokizutef.dcigym.com/uploads/1/3/1/0/131070476/241dd.pdfIn PDF document text
    • http://files.thealbertafloodroseproject.com/uploads/1/3/0/9/130969555/13cd00738d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5264/6050/files/34486758996.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1009/7313/files/2015_lexus_es_350_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0569/7438/files/mavurapusa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5316/2394/files/87832814340.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4783/6065/files/bible_concordance_kjv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7173/3917/files/36765618845.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1175/8504/files/pioneer_sx-_6000.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9197/5580/files/kinetika_adsorpsi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6779/3820/files/83972019058.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0293/6992/files/61523442925.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006ba3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BA3 5468 bytes
SHA-256: eccfd1370808382798a01d03c293141aedc1bf1f3661a573db471cd015fd7f67
font_01_sfnt_off00007e29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E29 10188 bytes
SHA-256: 5fec09ee0f7205a44cb621abd01c6debbd2f7b23b33de15dd6830a157aa18067
font_02_sfnt_off0000a0f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA0F7 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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