Malicious PDF — malware analysis report

Static analysis result for SHA-256 b3ce2e3c2f0f7d85…

MALICIOUS

PDF

52.1 KB Created: 2020-08-08 16:08:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 861f79852832d82135146305a9305a24 SHA-1: 54a21b86744b6d8ce2a96e1a45794a51c363c768 SHA-256: b3ce2e3c2f0f7d850523ce1ed166f72f218231cef7939d7f1c5a87d0c9659123
214 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains multiple heuristics indicating malicious intent, including a link to a known malicious redirector and a large number of external PDF links, suggesting a link farm or redirection strategy. The document body, though heavily obfuscated, contains a URL that aligns with the malicious redirector heuristic. The presence of a callback lure further supports a phishing or scam pretext.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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.com/pify?keyword=nalco+7330+msds+pdf In PDF document text
    • http://files.brainreachnorth.ca/uploads/1/3/0/9/130969986/3641528.pdfIn PDF document text
    • http://files.jubileecoachesrollesby.co.uk/uploads/1/3/0/8/130815009/fb9a4d14d880b.pdfIn PDF document text
    • http://mobazisib.newenglandcockers.com/uploads/1/3/1/6/131637136/pijevelivinexap.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/1/0431/8176/8864/files/93862945170.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6883/1382/files/59226390635.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0335/5034/files/18756786826.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7460/0598/files/nififefiturogale.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6333/6350/files/10854010866.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5519/4011/files/dawok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0428/7383/files/38495321896.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9408/1687/files/fosigel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0713/8201/files/oxitocina_y_carbetocina.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/87932640634.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1715/9335/files/vulowuxexupusepevulufode.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9321/2827/files/zefezev.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 5

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_off00008a9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A9A 5560 bytes
SHA-256: 5a0cb16b0e9d8f1da011d53b1d7e91f324964f98b9cc3153f513322faeb1a2a7
font_01_sfnt_off00009d83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D83 10728 bytes
SHA-256: 1bf6d607399bacd0645b97a336ca19acd371723642350bde6a0db7929d67c340

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