Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1b6a518e8fa2ec2…

MALICIOUS

PDF

47.4 KB Created: 2020-08-22 17:52:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f705239e3f1c781a37bf48c94c10d2e5 SHA-1: 22d45d33f23a9a6931c2363a897638361365e08d SHA-256: e1b6a518e8fa2ec281c5c4f9f406892781ce154c6a1a9b7127174cb811447543
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The document body, though partially corrupted, suggests a lure related to a 'water cycle worksheet'. The primary malicious URL identified is ttraff.cc, which redirects to a payload. The presence of a large number of external PDF links, many hosted on Shopify, indicates a link farm designed to improve search engine ranking for malicious content.

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=water+cycle+worksheet+7th+grade In PDF document text
    • http://files.naturallywylde.com.au/uploads/1/3/1/6/131637257/surerupovig_bexidafok_fefisa_jowurimimi.pdfIn PDF document text
    • http://napix.gmunnjoinersandbuilders.com/uploads/1/3/1/0/131070152/darojuzukugore.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/1/0436/4327/3369/files/manajemen_sumber_daya_manusia_hasibuan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pujipipokumamidepuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2729/1544/files/mesibikaremo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9505/5777/files/nunopuvugin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2562/0374/files/34630372309.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5082/6905/files/sasugekosibapizi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/2477/7117/files/gukikevixalujazuxotaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0459/0010/3834/files/suvimamipusitoxuxuxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9249/9877/files/ms_word_process_documentation_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5107/1126/files/3225673589.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 6

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006e1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E1D 5552 bytes
SHA-256: 85120b36abdf97295464d86a429e96ea75dcfa7b2c881e437336bcd70891492e
font_01_sfnt_off00008113.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8113 2536 bytes
SHA-256: 43d3dc35fac3cbb87bee9e3a39c9b3c65790059e51ddf3400f165f04894b88c5
font_02_sfnt_off00008bf4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BF4 10768 bytes
SHA-256: 3ae50e17862d491e8adeee27f40b36f29893e80f3fabe2abd79fb2d820c52730

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