Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f252bf77a7aaeca…

MALICIOUS

PDF

40.0 KB Created: 2020-08-27 23:16:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3ec3928dc8cf13ba87a974b1126a419c SHA-1: 19d7c72c0c03172740658af55de60fa78b89b672 SHA-256: 4f252bf77a7aaecaf82964a23757df3eb95064742c3225c859ad02c7798ee4e8
194 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains text related to photography posing techniques and the malicious URL, suggesting a lure. The PDF also exhibits characteristics of a link farm, with numerous embedded links to external PDFs, many hosted on Shopify. The primary malicious URL is likely used to redirect the user to a malicious site for further exploitation or payload delivery.

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=the+photographer%2527s+guide+to+posing+techniques+to+flatter+everyone+epub In PDF document text
    • http://silefe.jihyunhong.com/uploads/1/3/0/8/130814687/zizeginomuxavegi.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/1/0434/1671/5429/files/38062762992.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1569/1675/files/zijumidesi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8631/5671/files/mujujevegemeke.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4945/0663/files/soda_10._2_crack.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5107/1126/files/3225673589.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0452/4271/2221/files/amines_mcqs_for_neet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8528/2980/files/1573417332.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0298/5626/files/effects_of_budget_deficit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9567/8357/files/zikirobosuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/3593/0273/files/absorbancia_corregida.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 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004e24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4E24 4160 bytes
SHA-256: 0da58d6fe4b896c1ff9922ee0d6942fa1c936dc39708d85f8dc2592c4c567f55
font_01_sfnt_off00005cdd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CDD 5828 bytes
SHA-256: 188b0873e9cbe27411e45e1f354d1bb0424b42cf58637da92bc7111a1d8b0968
font_02_sfnt_off000070c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70C0 9804 bytes
SHA-256: d9bac5fb95c898431897b6a5d9e1ab695ed4a8df1fa1ed15838a8e11678facdd

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