Malicious PDF — malware analysis report

Static analysis result for SHA-256 bbe21adb885d3d25…

MALICIOUS

PDF

37.7 KB Created: 2020-08-19 17:06:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 65163f630f86f69b594efdaa06957b15 SHA-1: 2db8de729b259ea3ab14aff428df9fb5c78fcfea SHA-256: bbe21adb885d3d25f53812be18fc83910fc44ef7929a9554086a1e1700b58711
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 cdn.shopify.com, and one critical link to a known malicious redirector at ttraff.cc. The document body, though heavily garbled, contains text related to 'DVD CD video format' and appears to be generated by wkhtmltopdf, suggesting a potential SEO-based lure to drive traffic to malicious sites.

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=dvd+cd+video+format In PDF document text
    • http://files.bayridgerescuesquad.com/uploads/1/3/0/7/130775850/707819.pdfIn PDF document text
    • http://files.paulinedodd.com/uploads/1/3/0/7/130775021/sonokorap-vitugefufike-zezeko-wuviwe.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/1/0440/8619/8424/files/tezegi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5139/2922/files/columbia_capital_allocation_aggressive_fact_sheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9164/8929/files/tanatologia_cristiana.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8307/1650/files/davumitifere.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0650/0769/files/bse_odisha_10th_class_english_grammar_book_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9699/0105/files/13079819887.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8581/6218/files/pelobaravekojowixi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3153/5524/files/81243334253.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6365/6099/files/libgen_io_down.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7689/5398/files/bazorutopaxamodelazarif.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_off0000574e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x574E 5016 bytes
SHA-256: f264821a70d4f854b945edbecc769bf398371bce362cb9156783491266a057f4
font_01_sfnt_off0000684c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x684C 10152 bytes
SHA-256: 0ff1d440d386ff83505450e3ffd65b5907da41faeebc41bc89b12afbb5bc610e

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