Malicious PDF — malware analysis report

Static analysis result for SHA-256 65f7b27976a0bc7f…

MALICIOUS

PDF

45.2 KB Created: 2020-08-07 21:42:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2f476f1cf78430ad3c239a741bd6494c SHA-1: 4935af600f2f3e91f38775b200854257d0036842 SHA-256: 65f7b27976a0bc7fac78f7be47c610ad052d7853b41025b4ce8dd2d4d173b11b
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 ML classifier strongly flagged this PDF as malicious. The embedded URLs, particularly the redirector, are the primary indicators of malicious activity, likely leading to a malicious website or further malware download.

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=referencias+bibliograficas+apa+sexta+edicion+pdf In PDF document text
    • http://rolemu.drumcondratriangle.com/uploads/1/3/1/3/131383657/8fed5fcb7fb66e.pdfIn PDF document text
    • http://files.jonathankilhams.com/uploads/1/3/2/6/132695258/c69de4524b0.pdfIn PDF document text
    • http://files.touchdayspa.net/uploads/1/3/1/4/131453917/fipejikoxi.pdfIn PDF document text
    • http://files.spokenred.net/uploads/1/3/1/4/131406036/8789865.pdfIn PDF document text
    • http://files.planetstompers.net/uploads/1/3/0/8/130814279/jafumabe_kuvevot_zufatinuwinoxi_tizax.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/1/0432/2168/0283/files/mafukiruwumubazafeb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3526/3138/files/tivojululiviki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0417/4233/files/72975450636.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5580/0739/files/14641606137.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9216/3227/files/32885771289.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2778/4099/files/cambridge_academic_english_intermediate_teacher_s_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4847/5541/files/binotizonimurizuvumuso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0925/9158/files/jefedoviroduripudokoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9097/5647/files/98251406424.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1566/5824/files/zusur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5289/1298/files/53446720987.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3247/6838/files/acquired_aplastic_anemia.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 5

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_off00006ef8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EF8 5536 bytes
SHA-256: 4ee12abc973eccd7648053394ca139816081124fed16eaaa5ae46f90bacb242b
font_01_sfnt_off000081e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81E3 11012 bytes
SHA-256: 5fdbfaee7ae36462f7ce863339ac855051b9762ef33b8743a192407ccdcf7def

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