Malicious PDF — malware analysis report

Static analysis result for SHA-256 dbc258c3e4b0c0b1…

MALICIOUS

PDF

43.4 KB Created: 2020-08-23 03:08:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: bcaa1b3803b6fcb69c04f22beebb7b4d SHA-1: f2e7a7bdb9a368d1032d665bb0a0e15d80042458 SHA-256: dbc258c3e4b0c0b10caa8874b34fd1f7d61fb9b69df2b910741f2aea58fab77c
194 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a malicious URL, disguised with a search query lure. The PDF also hosts a large number of external links, many pointing to Shopify, suggesting a link farm or redirection strategy. The ML classifier strongly indicates maliciousness. No scripts were extracted from this sample.

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.ru/pify?keyword=best+android+phones+2019+cheap In PDF document text
    • http://files.wesselsdancestudio.com/uploads/1/3/2/6/132681969/pilotadozikor.pdfIn PDF document text
    • http://punivepi.bbpickers.com/uploads/1/3/0/8/130814297/573395b.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/1/0436/1856/6306/files/ganomitet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1024/3229/files/appsense_training.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1610/8701/files/chemical_reactions_and_equations_mcq_with_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9449/7698/files/gmail_attachments_to_folder.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8962/3208/files/zimakolipuzib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3862/9288/files/sujuxuwet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6012/6118/files/xezifisejug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6350/9141/files/popujamupiruvawarefubi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7142/2102/files/roxusubanedasubavarixo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6412/1757/files/22885708848.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3273/1030/files/multiplication_of_fractions_worksheets_with_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0944/0917/files/fogiza.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 1

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_off00006882.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6882 5660 bytes
SHA-256: 02df596c531a01054a4b09df9903aefe2a48c18eb385c214589fd76528312981
font_01_sfnt_off00007bbb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BBB 11248 bytes
SHA-256: 15c84bb3f9a591dd50adf69c971b9d2b7b9b3caabce7223d9998885a1b5746db

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