Malicious PDF — malware analysis report

Static analysis result for SHA-256 f83aafd158d70723…

MALICIOUS

PDF

41.5 KB Created: 2020-08-26 21:12:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5311babf82f7387c1b8021f204b7962c SHA-1: adc204aa89a18272736623841ca5cd1dd93d6373 SHA-256: f83aafd158d7072342ce3ed76352d4ff4f89428e83c8152af43b8d9215c18976
194 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.me'. The document body, though heavily obfuscated, contains this URL and references to a 'Samsung n8000 pit file', suggesting a lure. The file also exhibits characteristics of a link farm, with numerous embedded URLs, many pointing to Shopify, likely to improve search engine ranking for malicious content. The primary malicious IOC is the redirector 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.me/pify?keyword=samsung+n8000+pit+file In PDF document text
    • http://nasoz.misshartwellsclasspage.com/uploads/1/3/0/7/130775666/f6c4f67faa.pdfIn PDF document text
    • http://nuvirale.eileenenwrighthodgetts.com/uploads/1/3/1/4/131438500/154732a1886.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/1/0433/7047/9766/files/jevulime.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7399/3890/files/83045816823.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/6346/8189/files/80904346674.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9263/0947/files/aqa_a_level_biology_specification.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5508/6742/files/ramefuzamonala.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3684/3933/files/kamus_bahasa_jawa_krama.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9621/0594/files/43478401910.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/88065476392.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2544/9628/files/wigozabijasiditu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5080/3099/files/sizigimexazoku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8582/4164/files/41010905300.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9117/3278/files/saxon_math_course_2_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0683/5358/files/motipugigagikapebatudu.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 1

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_off00006160.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6160 5564 bytes
SHA-256: 13da551262d78ae516d2907bafb112d1b572084c9abf7ce39328d1d3d87e5c04
font_01_sfnt_off00007437.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7437 10900 bytes
SHA-256: 2cad7b3226d0b7e4151b850ef20a29320db199f4db613c8b7985d2bf3453c156

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