Malicious PDF — malware analysis report

Static analysis result for SHA-256 5556a81c2b4eb30e…

MALICIOUS

PDF

174.4 KB Created: 2020-08-04 22:03:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 2050491770f67b4b3df5fcae2cef5030 SHA-1: a2730b0b33d63f05e7712844ef05f25694d315bb SHA-256: 5556a81c2b4eb30e5b3d4f16f64d9743582db8c909ebf851a1255a6a8c6d8f0f
134 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=borges+libros+pdf'. The document body, though heavily obfuscated, also contains this URL, suggesting it is the primary lure. The ML classifier strongly flagged this PDF as malicious. The presence of a malicious redirector indicates an attempt to lead the user to a harmful destination, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 4

  • 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.
  • 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.cc/pify?keyword=borges+libros+pdf In PDF document text
    • http://files.countyparkfriends.org/uploads/1/3/0/8/130814279/zobisulit_selitiga_sojinotavom.pdfIn PDF document text
    • http://files.muylaert-hofman.com/uploads/1/3/2/8/132816195/kitifavopuwomup_nufojituxeza_jekikogug.pdfIn PDF document text
    • http://files.jmn-i.com/uploads/1/3/1/4/131411539/sanorezizobe_velufok.pdfIn PDF document text
    • http://bomuvu.carolstatella.com/uploads/1/3/0/7/130775257/01ebd4922850.pdfIn PDF document text
    • http://files.edengardenfusiongrill.com/uploads/1/3/0/7/130776812/tudifupolodi.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/1/0435/4169/2570/files/zipiselokarinebotu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8165/4691/files/sulowapelevew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2432/6564/files/kptcl_exam_question_papers_with_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7229/8913/files/zalisosiguberoxitasiref.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5468/6617/files/74594664791.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7150/4537/files/15175768502.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5049/2316/files/32053758134.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5259/6374/files/hp_2600n_driver.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6498/2693/files/tekizugizuxupenewub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9975/0560/files/bootstrap_tooltip_html.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002727e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2727E 5188 bytes
SHA-256: e0bab775d3e98955ad238121eb69b4ae8b8b34b9bf2d1eba79c4a63f54e731dc
font_01_sfnt_off00028433.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x28433 11868 bytes
SHA-256: 4366dba408c5551122e915870157f1b146015efb51d2ded915f1d24b4c3e5f15

Open this report in the interactive analyzer, or submit your own file for analysis.