Malicious PDF — malware analysis report

Static analysis result for SHA-256 37db7139f05a1d57…

MALICIOUS

PDF

50.2 KB Created: 2020-08-05 02:48:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e316963d87f1ade8867e545c28723041 SHA-1: bebaa4b35fe12e46241f715b75167ed879b5df06 SHA-256: 37db7139f05a1d579de191ce158092baaf384d40beba105b149a6437b5eda5d2
194 Risk Score

Malware Insights

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

The PDF was flagged by multiple critical heuristics for containing malicious redirector links and a link farm. The ML classifier also strongly indicated maliciousness. The document body contains obfuscated text and a prominent link to 'ttraff.cc', a known redirector, which likely leads to a malicious payload or phishing site. The large number of embedded links, many hosted on cdn.shopify.com, suggests an attempt to distribute malicious content widely or to obscure the true destination.

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=alias+grace+pdf In PDF document text
    • http://files.pawsitivelyunleashed.com/uploads/1/3/0/9/130969710/9ea9e.pdfIn PDF document text
    • http://lexeredem.nextgenindy.org/uploads/1/3/0/8/130814229/korotolobalizozu.pdfIn PDF document text
    • http://files.jaylowe.com/uploads/1/3/1/3/131398174/4802376e326.pdfIn PDF document text
    • http://files.janetalexander.net/uploads/1/3/0/7/130739503/a414989091b0f.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/1/0429/3243/7158/files/38448241791.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6227/1898/files/botevirozixulapige.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1915/8183/files/44261657688.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7207/0556/files/estados_financieros_auditados.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1423/4013/files/nstm_555_revision_13.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1676/5088/files/lexiboxewoluloxidedikal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5685/5190/files/53358516346.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7420/8415/files/95348589106.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9610/4348/files/xabuxofimotolimojulutujap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6416/4506/files/furegu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2665/2055/files/vuresebokoj.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_off00008607.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8607 5312 bytes
SHA-256: c832e1a84eeaae6ccd9806f90c5ad277f6428cd8dc8621bc439a0bfadd39ccdd
font_01_sfnt_off0000982b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x982B 10788 bytes
SHA-256: 2dafb6e87860ceca205489a9f371c5c712ccc23c44392053d065a364fbcaadec

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