Malicious PDF — malware analysis report

Static analysis result for SHA-256 ef42e9b3475462c6…

MALICIOUS

PDF

44.1 KB Created: 2020-08-21 20:40:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 87fb58d3fe9b0a8c17240c0cc13a4ee7 SHA-1: 38ad75de438a1075dc6c75b51371570d78ecfcf0 SHA-256: ef42e9b3475462c65bb326d193d5f4da472aea4e3872d915f1f9d513738013a7
194 Risk Score

Malware Insights

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

The PDF file contains a link that redirects to a known malicious domain, ttraff.com, disguised with a seemingly legitimate keyword. This indicates a phishing attempt to lure users to malicious infrastructure. The PDF also contains a large number of external links, many hosted on Shopify, which is characteristic of SEO link farm abuse to obscure the malicious redirector. No scripts were extracted, but the primary malicious behavior is the redirection to a harmful 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=project+management+cost+estimate+template In PDF document text
    • http://files.bcrenergygroup.org/uploads/1/3/2/6/132696558/979851.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/1/0432/7414/1864/files/gefadujajebufuzu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0999/0043/files/shoulder_impingement_syndrome_treatment.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3092/0871/files/application_format_for_applying_govt_job.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4013/5575/files/65893722571.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2917/6232/files/catalogo_de_tornillos_para_madera.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7743/5556/files/icao_annex_3_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9286/0327/files/the_colbert_report_season_11_episode_40.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0854/0324/files/professional_recommendation_letter_sample.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1588/9305/files/tomujogobapavotubem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9550/6592/files/mudutugijilopapumil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1466/7936/files/xixaripadomusivizanuwipe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8669/0969/files/wacom_intuos_pro_pth-_651_driver.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2882/4742/files/eq_test_for_students.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5541/5445/files/produccion_de_bacillus_thuringiensis.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 5

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_off00006df3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DF3 5328 bytes
SHA-256: 761fdbd71cfff114d4ac934322040e761ff1c66b51af810deee522257fba1c3b
font_01_sfnt_off00007ffe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FFE 10312 bytes
SHA-256: fb3b0391873333907c9aac2ecde314ad504a022df1f10af4192a882513cf519e

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