Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e8ee4c6e52cf62e…

MALICIOUS

PDF

42.9 KB Created: 2020-09-10 19:04:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7a81b81e26631394b2de193fdcad87f6 SHA-1: c8774852991de37c577338b4e27e133a07ff856f SHA-256: 8e8ee4c6e52cf62e45e07693b75c04dfb547ca326f06559d69d2cf8643beeb25
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links, many of which point to external websites. One critical heuristic identified a link to a known malicious redirector, and another identified a link farm designed for SEO manipulation. The document body, though heavily obfuscated, contains a URL that appears to be related to 'binomische formeln aufgaben mit lösungen klasse 10', suggesting a lure to disguise malicious intent. The primary attack pattern involves redirecting users to potentially harmful sites through these embedded links.

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.link/wix?keyword=binomische+formeln+aufgaben+mit+l%25C3%25B6sungen+klasse+10 In PDF document text
    • http://zafuxax.breakingrulespublishing.com/uploads/1/3/0/7/130775455/sirafesubuxa-budiwesezi-pebopoviz-levudilenojesi.pdfIn PDF document text
    • http://files.advicetotheplayers.org/uploads/1/3/1/8/131871951/9060062.pdfIn PDF document text
    • http://files.cpsplantscapes.com/uploads/1/3/0/7/130739693/pezaneji_xogan.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static.usrfiles.com/ugd/69b86f_33745609ba7b4e89bb6dfceb60e99326.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/5ad03d_0d5c18bb77b149c29dfac90b1b1fc06c.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/1f5cef_5c3f772240d64bb496b9c1466c6b6069.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4916/5734/files/84437858089.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7480/4126/files/wilizajosaxodezi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7433/8472/files/41933458151.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4287/4278/files/chief_examiner_s_report_on_english_language.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/2728/9496/files/pojabukuzapekajuteku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0461/7912/3353/files/golf_fundraiser_flyer_template_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1540/4695/files/22931710373.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: cpsplantscapes.com 4 samples

Related samples 4

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_off00006156.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6156 5880 bytes
SHA-256: 29da0c920d62395c1eb0f52ff162665804c290acc08462ec7a14f1ac2dbfafdc
font_01_sfnt_off000074fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74FB 11884 bytes
SHA-256: 9c4b5e354489e2ec03f29c1ff88a740b7a1de78ba790bbf2192171af2311d191

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