Malicious PDF — malware analysis report

Static analysis result for SHA-256 dfdbe454b81beea9…

MALICIOUS

PDF

43.2 KB Created: 2020-08-09 13:36:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: bb045deb1f4f654eb36f19b62394069f SHA-1: 642dcafedd9196fe75c1a075c75180b1fab6e1be SHA-256: dfdbe454b81beea9220692e7b5debcae5d7725c6d0e1f941fc008657a33770f2
214 Risk Score

Malware Insights

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

The PDF document impersonates a cloud file-sharing service to lure the user into clicking a link. The primary link directs to a malicious redirector, which in turn likely leads to a payload download or further phishing attempt. The document body contains numerous embedded URLs, many pointing to Shopify-hosted PDFs, suggesting a link farm for SEO manipulation to attract users searching for PDF conversion tools. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms the malicious nature of the primary redirector URL.

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.
  • Cloud document impersonation lure medium SE_CLOUD_DOC_LURE
    Document impersonates a cloud file-sharing service such as SharePoint, OneDrive, Google Drive, Dropbox, Box, or Microsoft 365 and asks the user to open, verify, or access a shared document
  • 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=convert+pdf+to+editable+word+android In PDF document text
    • http://files.gfhsmt1964.com/uploads/1/3/1/6/131636941/ccd4dfde99aa0.pdfIn PDF document text
    • http://files.xelaboutiquehotel.com/uploads/1/3/1/4/131407067/zasuxadevazugil.pdfIn PDF document text
    • http://files.myacexportfolio.com/uploads/1/3/1/6/131637306/5762611.pdfIn PDF document text
    • http://files.sharingstitches.com/uploads/1/3/1/6/131636890/melovaluxumaz-junakow.pdfIn PDF document text
    • http://files.sharaspencer.com/uploads/1/3/1/4/131406258/mitojegabetis.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/1/0433/0687/7080/files/kesutuzijakakewinepubad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5045/1623/files/viminawuwokomepi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1681/2706/files/persona_3_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7807/4020/files/37983334715.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3089/6026/files/nopurosalumuzagazuzud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4667/4330/files/kulajitigujowiludenuxit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/3220/3679/files/discord_sound_not_working.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6636/8935/files/27886337026.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1739/5614/files/53460105401.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5720/9753/files/60361402112.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6201/8727/files/56377096416.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 7

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_off00006c38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C38 5056 bytes
SHA-256: 1b51ba46a3c4f14712e29a6b75d90bab40edad4d1227840c53b6dbb2375621e2
font_01_sfnt_off00007d86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D86 9992 bytes
SHA-256: 4709bf902c3dd75776739cd020aa5475556d4ebdb44136d566fa23525334bb1c

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