Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd63c37a133cf234…

MALICIOUS

PDF

40.0 KB Created: 2020-08-11 14:42:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1fbbc8da472d8bd0246c7a651da8dc32 SHA-1: b7ac6d4eca12e13e53ec283ea91272b434285547 SHA-256: bd63c37a133cf234515350a1fe86543136ac340c5b7be3afec84cf9b46f280ff
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=simple+past+tense+verbs+pdf'. This URL is designed to redirect users to potentially harmful content. The document also contains a large number of embedded links, many hosted on shopify.com, which is flagged as a PDF link farm. 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=simple+past+tense+verbs+pdf In PDF document text
    • http://files.bblackstone.com/uploads/1/3/2/6/132682124/pimere.pdfIn PDF document text
    • http://sesazo.mariemanski.com/uploads/1/3/1/0/131069934/93ce204.pdfIn PDF document text
    • http://files.globalimagephotography.net/uploads/1/3/0/7/130738679/mamiriragelovavebaf.pdfIn PDF document text
    • http://files.nanolab.info/uploads/1/3/1/3/131379749/befuraxigufero.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/1/0431/8353/8331/files/72150842178.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4926/3004/files/vezutakoborofimele.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3667/2162/files/pufarozex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vibuzos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/7750/4925/files/python_queue_example.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9619/3686/files/bafusaxipuvalekenedis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6046/0706/files/39196013077.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1110/5191/files/wejowugifoxid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8153/9483/files/88313696119.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2866/6785/files/normal_approximation_to_the_binomial_distribution_examples.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1995/9454/files/cambridge_igcse_economics_workbook_answers_susan_grant.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_off00005d94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D94 5492 bytes
SHA-256: 7fda57b466d779e52b692a4a488126f93d24032371c9fa1fcc6e5cb27ff976b7
font_01_sfnt_off00007020.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7020 10292 bytes
SHA-256: 49452876daaafb748e4860fc50bf3966d898b6f65aba3190ed29ed66606dc12c

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