Malicious PDF — malware analysis report

Static analysis result for SHA-256 e40205ad6461b1ff…

MALICIOUS

PDF

35.6 KB Created: 2020-08-20 22:02:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: bff0d0c6af2ce27074dee2018fbd648d SHA-1: b5235659a9665a5a278ff7d15325d0079c494aba SHA-256: e40205ad6461b1ff71680648369c264e1a3797a29e948fa0c3cfff7e08b709da
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, specifically 'https://ttraff.cc/pify?keyword=waterloo+sunset+sheet+music+pdf'. This indicates the document is designed to redirect users to a potentially harmful destination. The presence of a large number of external PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to increase visibility and clicks. The ML classifier also strongly flagged this PDF as malicious.

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=waterloo+sunset+sheet+music+pdf In PDF document text
    • http://files.antsrus.com/uploads/1/3/1/0/131069992/nizoxag_nidaxe_zekiwupe_rifulepofa.pdfIn PDF document text
    • http://guduren.lwvmontclairarea.org/uploads/1/3/1/3/131379410/7549200.pdfIn PDF document text
    • http://files.venusdirections.com/uploads/1/3/0/7/130775952/teneweb_vogodiro.pdfIn PDF document text
    • http://zazoluk.hughesling.com/uploads/1/3/0/8/130813821/6267809.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/1/0434/2772/5474/files/beautiful_creatures_book_online_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3525/4171/files/83411370992.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2249/1553/files/comment_couper_un_en_2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2429/2762/files/biological_diversity_act.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5317/0334/files/befagafapimovigololusaxaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0324/8803/files/thanks_letter_to_boss_for_appreciation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4488/1059/files/introduction_to_c_programming_notes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5622/5694/files/fanoxalagovakerazibod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5251/2918/files/chief_keef_faneto_mp3_download.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004b70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4B70 5408 bytes
SHA-256: 3b678b1525a53f29eb5ffff7d1b66fd032a374e8f6e0166840e889784e491014
font_01_sfnt_off00005db0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DB0 10592 bytes
SHA-256: f3e2065f7cdf42c4d003f83fa7d2a802e2b15ef55fbbe15d5a76e43b0d84f716

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