Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb3f38dbc082481d…

MALICIOUS

PDF

63.0 KB Created: 2020-07-27 00:05:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 723dcdcbf08d0724e0c8d6d439e4df3e SHA-1: f0cc278589091b05a82f81a92959c8a005aee0e2 SHA-256: cb3f38dbc082481d78a9e5a19856799d72c3bda0d548d7eca16f8156a079d334
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of the primary links redirects to a known malicious redirector at 'ttraff.com'. This indicates a social engineering attempt to direct users to malicious content. No scripts were extracted, and the document body was heavily obfuscated.

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=r+c+e+p+ka+full+form In PDF document text
    • http://files.danceology.ca/uploads/1/3/1/3/131380467/lofot.pdfIn PDF document text
    • http://files.wholehealthliving.blog/uploads/1/3/0/8/130874217/tufuve-sojigobafo-dapubek.pdfIn PDF document text
    • http://files.randjexpressions.com/uploads/1/3/0/8/130813931/84134.pdfIn PDF document text
    • http://files.northwestibassociation.com/uploads/1/3/1/4/131438211/linoxebijoga.pdfIn PDF document text
    • http://files.barbarawortham.com/uploads/1/3/0/7/130775103/tipenowoditudimo.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/1/0428/5294/1990/files/ruputadowonulabirajexije.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2121/2570/files/79720032310.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9942/2881/files/lubodiwukutulidupuzilim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8260/3927/files/60928091547.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3690/1527/files/53981579259.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5359/4277/files/89138505124.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5649/6791/files/xavemovuxeterinav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5135/1200/files/tiwilakuwitorurub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8542/2997/files/xelasizusifazasizezudul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5288/3352/files/rupureselavoguxokasi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2186/7930/files/wugeruvagugonu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2338/5247/files/getowegonalitizezipetoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2537/5130/files/32421880599.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5537/3720/files/39458538469.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
    • http://www.gnu.org/licenses/lgpl.htmlRegularDanhHongIn PDF document text
    • http://www.geocities.com/dnhhngIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a7db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA7DB 4704 bytes
SHA-256: 827cea746c59996e8fde50eb352c83ae3d8845a268939ca52787b3a7b6bf446b
font_01_sfnt_off0000b7d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB7D4 3980 bytes
SHA-256: bea65ff9b5279615aa88d70352ff6ba3b3dd8401a8e626866b84c06df41393a3
font_02_sfnt_off0000c3c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC3C8 13644 bytes
SHA-256: 357b9dfee47cac097da1b35d5dd5a6e2a3653fb995af3f7706de47b693e34ef2