Malicious PDF — malware analysis report

Static analysis result for SHA-256 86a6814b1ff0391f…

MALICIOUS

PDF

33.9 KB Created: 2020-08-04 19:11:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 32bc3d1768696067d72dc7b672c0c70e SHA-1: 4bf9c3cdda40b8a33699d295f90afabed7aeee7c SHA-256: 86a6814b1ff0391f8021479818925f01ee62fe82967d6bdcf98ceba00b64e70b
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, including one pointing to a known malicious redirector at 'https://ttraff.cc/wb?keyword=manorama%20year%20book%202018%20pdf'. This, combined with the heuristic identifying a PDF link farm and ML classification, strongly suggests a phishing or malware distribution attempt. The document body, though corrupted, contains text that appears to be a lure for a book PDF, further supporting this attack pattern.

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/wb?keyword=manorama%20year%20book%202018%20pdf In PDF document text
    • http://files.suffolkjuniorchess.org/uploads/1/3/0/8/130874566/e0e3238332.pdfIn PDF document text
    • http://files.ottercreekcc.org/uploads/1/3/0/7/130775280/2445538.pdfIn PDF document text
    • http://files.artbyvicki.net/uploads/1/3/0/7/130739490/tuvobesa.pdfIn PDF document text
    • http://files.ewingthenandnow.com/uploads/1/3/1/4/131453260/97715ada.pdfIn PDF document text
    • http://files.saintgregorys.org/uploads/1/3/1/3/131383541/mokogofobu_vivavolabuxe_sizirugadisazat.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/1/0431/8085/1364/files/67150585164.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5250/7036/files/tukonolig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/8128296882.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7661/6341/files/97008189518.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6984/8217/files/anatomy_and_physiology_coloring_workbook_chapter_2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7630/2486/files/95931659235.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8959/0427/files/best_ebook_reader_app_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1077/6478/files/whirlpool_gold_series_refrigerator_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2476/0488/files/30690613349.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5845/3928/files/voltage_divider_and_current_divider_rule.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
🗂 Part of campaign: suffolkjuniorchess.org 4 samples

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_off0000463b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x463B 5808 bytes
SHA-256: 28224c8cbc4c0e8a25af277bd82ea4055b6d706db0742910946f6c17905207cf
font_01_sfnt_off00005a0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A0A 9640 bytes
SHA-256: 1688ec90a24f41d032816dbbc750244ef67e1a8461fe1e48abaa57f405d74d38

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