Malicious PDF — malware analysis report

Static analysis result for SHA-256 313b7b056a44e738…

MALICIOUS

PDF

41.9 KB Created: 2020-08-16 19:27:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e659a7f849eb02d54982112a3ace23cb SHA-1: 0a58782f3920e21ecb203ae514ec7063bbd94c6f SHA-256: 313b7b056a44e738d1d213c2ac6f2d79088b204260d066f45db4a82da724a0e5
194 Risk Score

Malware Insights

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

The PDF file contains a malicious redirector link pointing to 'ttraff.com' and exhibits characteristics of a PDF link farm, with numerous external links to other PDFs. The document body, though partially corrupted, contains the text 'Commercial real estate templates' and the URL 'https://ttraff.com/pify?keyword=commercial+real+estate+templates', suggesting a lure to entice users to click on malicious links. The ML classifier strongly indicated maliciousness.

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=commercial+real+estate+templates In PDF document text
    • http://files.megaworldglobalcondos.com/uploads/1/3/2/3/132303061/160112.pdfIn PDF document text
    • http://vaduse.customcontractinginc.com/uploads/1/3/1/8/131856695/4277079.pdfIn PDF document text
    • http://tabovi.campbellscostarica.com/uploads/1/3/0/8/130873825/jemip_ruwuj_jarobuke_lidigijinetagam.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/1/0433/1926/3397/files/simple_english_grammar_questions_and_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3406/7615/files/titavefiwutivezeridoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8942/8637/files/argumentative_essay_high_school.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3748/9309/files/mawutupetu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8512/8099/files/banking_regulation_act_1934.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5631/7091/files/lipakagefoxezigifov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9239/3640/files/85173148707.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7166/7352/files/22466437779.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7329/7814/files/23573779296.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4339/6506/files/apache_hadoop_yarn.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8632/1566/files/fakiwipoligelafojob.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 2

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_off000067f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67F0 4984 bytes
SHA-256: a09aae513cda9c0467dba637a298caaded66042d3651c1250186fcd70a212e2f
font_01_sfnt_off000078bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78BF 10048 bytes
SHA-256: 1ab9d503dae3a597a78a8bbbfb184fb77339fd20e3131400fd6269f675a782b2

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