Malicious PDF — malware analysis report

Static analysis result for SHA-256 663897c5dc7c5547…

MALICIOUS

PDF

41.1 KB Created: 2020-08-25 12:33:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a58893181dc9cb17ee0d10dd9d9047aa SHA-1: 5df5c1ce654429fa7b4de69f966819b44159f4f0 SHA-256: 663897c5dc7c5547c46539fc564f138e2e1576499b2745b82396086d4ce10261
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm and a redirector URL, indicating a phishing or scam attempt. The primary malicious URL identified is https://ttraff.cc/pify?keyword=legal+fact+sheet+definition, which is likely used to redirect users to malicious content. The ML classifier strongly supports the malicious nature of this PDF.

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=legal+fact+sheet+definition In PDF document text
    • http://files.charleysplacemorrismn.com/uploads/1/3/1/4/131407045/rokuruzevabi.pdfIn PDF document text
    • http://lafaj.intoutuotni.com/uploads/1/3/1/4/131454143/4913682.pdfIn PDF document text
    • http://files.byronwashington.org/uploads/1/3/2/7/132710763/wapabozogu-dakolaju-kokirup-tosuguwixeg.pdfIn PDF document text
    • http://gaseran.joshbroussard.com/uploads/1/3/2/7/132740873/85ec5378.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/1/0435/9569/4239/files/ap_icet_2020_notification.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2731/5353/files/zemabomebesoniwijanir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1882/0511/files/harmony_remote_software.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6108/3301/files/fepujozizosifixomazule.pdfIn PDF document text
    • http://buzuraraz.prehistoric-inc.square.site/uploads/1/3/0/8/130814674/demur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9391/5800/files/mathematics_test_2009_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0464/7357/6616/files/hunter_x_hunter_ending_song_3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0443/0423/6700/files/bbg_2._0_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4115/3439/files/2099615017.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7974/5192/files/sheet_street_side_lamps.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8371/9071/files/audible_books_to_kindle.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7949/9940/files/65683377365.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9926/6979/files/67216659876.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0221/5069/files/aristoteles_metafisica_libro_2.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_off00006177.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6177 5128 bytes
SHA-256: 9785dc80ccbc3a216233b06ced5402bfc75612725209bf000c2de359b4754f7c
font_01_sfnt_off000072ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72EA 10260 bytes
SHA-256: 2ff285fbf14772ef90c6f07ee9db5e12dbaecd368be7fbb751c2b6ba74a6daa7

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