Malicious PDF — malware analysis report

Static analysis result for SHA-256 b88eae1a38dc37b4…

MALICIOUS

PDF

47.5 KB Created: 2020-07-31 12:55:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c13ac7dac90cef22b15e9082d65576b5 SHA-1: 7c638bcf9fc294955ac2dbeb6701f534991a041d SHA-256: b88eae1a38dc37b4cef49c8de127b13735ba300a283dbb0b9af31b10b1ecc843
194 Risk Score

Malware Insights

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

The PDF file was flagged by multiple critical heuristics for containing malicious redirector links and a large number of external PDF links, indicating a link farm. The primary malicious URL identified is ttraff.com, which is known for redirecting to malicious content. The document body appears to be malformed or obfuscated, preventing a clear understanding of its direct lure, but the presence of numerous external links strongly suggests a redirection-based attack. 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.com/pify?keyword=glicina+neurotransmisor+funcion+pdf In PDF document text
    • http://files.southcliffcommunitygroup.com/uploads/1/3/0/7/130776883/lafafo.pdfIn PDF document text
    • http://files.christophertsmith.com/uploads/1/3/1/4/131453555/2224318.pdfIn PDF document text
    • http://files.fmhsabcmerchandise.com/uploads/1/3/0/8/130874316/zemez.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/1/0435/6400/7583/files/24499358022.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2068/8282/files/56010579796.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6509/8908/files/17613004741.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5639/0551/files/72873831139.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2137/6410/files/dededebevim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0521/3847/files/6712495207.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3302/4929/files/devorapamugebogulalovat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rejupabofutub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/83406059157.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0665/6666/files/buwopete.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007ad1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AD1 5216 bytes
SHA-256: 7083f6127648360e2e9afbb0e2e20c58dd9c1273d6e6866aebc4701fdb07ad68
font_01_sfnt_off00008c6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C6C 10748 bytes
SHA-256: 20ea8ae7ea22e791d19598478e6f3132472cc86d89547bb04c419f542484367d

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