Malicious PDF — malware analysis report

Static analysis result for SHA-256 f38bf6b7a863d19e…

MALICIOUS

PDF

38.5 KB Created: 2020-08-14 22:46:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b9482841e521e3d56509901a640a3ca0 SHA-1: 6cdb0e7fb6553c309fbd1750e131f54f8aef4114 SHA-256: f38bf6b7a863d19e03462d28357b9b8e4695e5086dce55272e59f14c08292027
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but the primary link directs to a known malicious redirector. The document body, though partially corrupted, contains text related to PDF conversion and the malicious URL, suggesting a social engineering lure. The presence of a malicious redirector indicates an attempt to lead the user to a site that likely hosts further malicious content or exploits.

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/wb?keyword=converter%20pdf%20em%20word%20gratis%20em%20portugues%20online In PDF document text
    • http://files.jennahaines.com/uploads/1/3/0/8/130874304/puwowubibedimaxuvo.pdfIn PDF document text
    • http://files.thrivetherapies.co.nz/uploads/1/3/0/8/130814715/868757365670e.pdfIn PDF document text
    • http://files.globemarineservices.com/uploads/1/3/1/0/131070581/xamiwedalejezijekowa.pdfIn PDF document text
    • http://files.madpuzzler.com/uploads/1/3/2/6/132682338/mesiwelojutazo.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/1/0439/5096/4904/files/zopetipavolujoxusobasiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6595/6759/files/satejinujexawago.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3865/3081/files/gezijoxidepiwesijovij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4693/5451/files/klebsiella_pneumoniae_treatment.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6839/9524/files/59660927325.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7143/9001/files/wibekazugepin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sitomomuwarusubewikujo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1275/7400/files/98356985613.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9026/4742/files/wunekatisu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0378/1013/files/semivoxebudub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8945/3473/files/97030954403.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9906/2421/files/prueba_de_bondad_de_ajuste.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 4

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_off0000540d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x540D 5420 bytes
SHA-256: f9411177347dfd1a9a61a9214bd43f66261cbf7ed3b12ce972851f35e78126d7
font_01_sfnt_off0000667c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x667C 12056 bytes
SHA-256: b9a434944ed4d3626449b47de2553b0f224005041567bf4cd9e366b583683b26

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