Malicious PDF — malware analysis report

Static analysis result for SHA-256 627d50687c92b448…

MALICIOUS

PDF

50.1 KB Created: 2020-08-21 23:29:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c42dd051aa287a1ea080659531e0dc5f SHA-1: 91a4e91670634f73072896a6b1e0b51e6ff5eb2a SHA-256: 627d50687c92b448a1507ecdaf47520ef3b90d4d70234a60e46446cc8cec1d09
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that lead to a redirector service, which in turn points to a link farm of other PDFs. The primary malicious link is `https://ttraff.com/pify?keyword=cdc+immunization+guidelines+splenectomy`, which is designed to appear as legitimate information but redirects to potentially harmful content. This indicates a phishing or scam attempt.

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=cdc+immunization+guidelines+splenectomy In PDF document text
    • http://xagikaz.brittanysloan.com/uploads/1/3/1/1/131164250/jiger.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/1/0434/6832/5029/files/99933802965.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wimuwukewamofese.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7300/2906/files/mokumarumazo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4085/8527/files/66688904321.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1117/8649/files/bang_bang_telugu_movie_utorrent.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7938/5766/files/8506712078.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3705/5393/files/criminal_law_and_civil_law.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2429/3796/files/83272050610.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5943/6951/files/75406099212.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3732/5462/files/35683528461.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6966/1589/files/62097626386.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 2

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_off00007845.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7845 5352 bytes
SHA-256: cb46d4eaddf8660d3907e4827d37be6dc4abcf47288014a384f95039de8555b8
font_01_sfnt_off00008a77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A77 10280 bytes
SHA-256: d0bfacf5bc2b8d6e9a38d07d2738f5cf18f5beb2c756ee5db4d9ee19c9130e30
font_02_sfnt_off0000ad97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAD97 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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