Malicious PDF — malware analysis report

Static analysis result for SHA-256 56bf1ea0dac34477…

MALICIOUS

PDF

42.9 KB Created: 2020-07-30 07:16:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5f026d7617565afd3f75dd1028c49d16 SHA-1: 2fe92a41346228b70660240741ef201ab1a0d77e SHA-256: 56bf1ea0dac3447726e83956cd59ff50c94be205ad88599d99bbaf2354b62f92
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits a PDF link farm pattern, with numerous links to external PDFs, many hosted on 'cdn.shopify.com'. The document body, though heavily obfuscated, contains metadata suggesting it was generated by wkhtmltopdf, a tool sometimes used to create malicious PDFs. The primary attack vector appears to be directing users to a malicious URL.

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=ecology+ncert+pdf+download In PDF document text
    • http://files.photographyfromthesoul.ca/uploads/1/3/1/3/131380596/vovujez_duwamiwe_farulasefaxe_nesija.pdfIn PDF document text
    • http://files.winningmentalitygroup.com/uploads/1/3/0/8/130813516/pirifiz.pdfIn PDF document text
    • http://files.rachaelsthoughts.com/uploads/1/3/1/6/131606789/gifimomuneku-dijatazexe-sizivamelum.pdfIn PDF document text
    • http://files.david-blue.com/uploads/1/3/2/6/132681438/46303.pdfIn PDF document text
    • http://files.teachingelementaryspanish.com/uploads/1/3/0/8/130873718/nesafamep_zomiwobam_wajutavirenipo_rowitunasa.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/1/0427/5847/1846/files/ramokufewipenegexu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0881/8333/files/xitukomemotomifas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3633/4485/files/83578223674.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6090/4615/files/58140947277.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5296/6812/files/totusabe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2137/6410/files/8028389218.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1662/6081/files/zupesekipupopemojinowes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4726/3131/files/17072625231.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2395/7144/files/99895024350.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4513/5260/files/bilojedejasunefivijadix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7142/2115/files/52687826860.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5669/3397/files/78061715656.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_off00006c2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C2A 5036 bytes
SHA-256: f7ed50a9b98ff5d36f1903fe27974e83d1eb99e4684705cef98b09379e4509a7
font_01_sfnt_off00007d6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D6D 9732 bytes
SHA-256: c5356c22333e570575cf287f84d160264cf389f074bb0af5bc84f5a0a3f0bbc8

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