Malicious PDF — malware analysis report

Static analysis result for SHA-256 efddfbcddde74617…

MALICIOUS

PDF

32.7 KB Created: 2020-08-06 10:43:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 17551639cbc1469278553333688edcea SHA-1: c6a2ec6870ad568e7698c2480ab6746650690fdc SHA-256: efddfbcddde746172b3924945a94f97e4f04b43adbc250d83f7c84f91b3237dc
194 Risk Score

Malware Insights

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

The PDF contains numerous links, including one to a known malicious redirector at 'https://ttraff.com/pify?keyword=visiting+card+design+pdf'. The document body, though heavily obfuscated, also contains this URL and other links to PDF files hosted on Shopify. This suggests a link farm or redirection scheme designed to lead users to malicious content. The ML classifier strongly supports the malicious nature of this PDF.

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=visiting+card+design+pdf In PDF document text
    • http://files.lightbulbcoaching.co/uploads/1/3/1/3/131384145/puzofexek-monimusogeworav-jegojis.pdfIn PDF document text
    • http://tisiju.literacycenterofharlingen.org/uploads/1/3/0/8/130874655/firorafepekil.pdfIn PDF document text
    • http://files.cookislandsoptometrist.com/uploads/1/3/1/6/131607029/186d53c3b68079.pdfIn PDF document text
    • http://files.westwoodhoops.com/uploads/1/3/0/8/130813887/loxabikenuwu_gawesokifig.pdfIn PDF document text
    • http://files.katieargyle.com/uploads/1/3/2/6/132695535/8362640.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/1/0432/5762/6792/files/27258069004.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9437/6599/files/23483292079.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5879/8492/files/berger_parker_index_pdf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5932/8662/files/wekukeguxefoxedosoxu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0215/7466/files/28035020767.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2749/6087/files/46282845211.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3326/3253/files/tabifadafizegivir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9611/2294/files/xowirefabe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6334/4280/files/lawezaliwafiragopup.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 3

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_off0000440c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x440C 5256 bytes
SHA-256: 81500d138282fda52aa8e324207650238827c87f3789f111297fbcbeb3048544
font_01_sfnt_off00005603.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5603 9516 bytes
SHA-256: 7cc45061751c815de5747da796829dc4a626af0f24a6452a9b431e3b59c870a1

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