Malicious PDF — malware analysis report

Static analysis result for SHA-256 71c65f6fbe61f482…

MALICIOUS

PDF

53.4 KB Created: 2020-07-31 02:30:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4fcc8cfbac468fd5c4b1af7b4ad147ae SHA-1: 82e3fab8bdc3c2446cc6e4411042e4b795c8648a SHA-256: 71c65f6fbe61f48235bdab2afed4c6cbf1cfa788e26239b4c1db0525894806bd
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, many pointing to a redirector service (ttraff.cc) that is flagged as malicious. This suggests a phishing or scam attempt, likely using the 'free download' lure as indicated by the URL parameters. The ML classifier strongly supports the malicious verdict, and the presence of embedded URLs confirms the intent to direct users to external sites.

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=atonement+pdf+online+free In PDF document text
    • http://files.kellypiliouras.com/uploads/1/3/2/6/132695301/7871457.pdfIn PDF document text
    • http://files.weavingswellness.org/uploads/1/3/2/6/132683001/meveraga.pdfIn PDF document text
    • http://files.jenniferdehoffdesign.com/uploads/1/3/1/4/131438114/4722971.pdfIn PDF document text
    • http://files.skmusicboosters.org/uploads/1/3/1/8/131871625/8805677.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/1/0434/4968/0028/files/99783868474.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9443/4207/files/gagonob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1313/4757/files/zixivilivavozajila.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0595/9574/files/fitopavofelet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8277/6725/files/jilobakanagek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8896/9882/files/62291656088.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0458/3318/files/nebix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4166/0826/files/gasojuzirak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0610/7552/files/kemigenix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8322/5506/files/poranakimixakubefatetimat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8497/2183/files/gutok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5723/3576/files/fizojijevezij.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_off00008c65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C65 4576 bytes
SHA-256: 7a7946ef59f113b6e813e4f271785fbca3ebfc18964ad61dd0e7e6db04ee95b4
font_01_sfnt_off00009bd4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9BD4 14264 bytes
SHA-256: 654542ccabde5ce8bfd07ea55cae135e5ee48bb1946f3a42f04a8bb0593eff3f

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