Malicious PDF — malware analysis report

Static analysis result for SHA-256 52ea356d0c381478…

MALICIOUS

PDF

47.7 KB Created: 2020-08-25 15:31:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9c9359e081a99050cf887141950ebac2 SHA-1: 1b1b834a307dcd5f08c22918ce40a1081e74eed4 SHA-256: 52ea356d0c3814785ebfeb8fb41e49b3fa551433d550ee0e6cc8754b8227bbb4
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a mass external link farm, with one critical link pointing to a known malicious redirector. The ML classifier also strongly flagged this PDF as malicious. The embedded URL 'https://ttraff.cc/pify?keyword=android+studio+configure+keyboard+shortcuts' is the primary indicator of malicious intent, likely serving as a lure for further malicious activity.

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.cc/pify?keyword=android+studio+configure+keyboard+shortcuts In PDF document text
    • http://files.fhcamd.org/uploads/1/3/0/7/130776460/xukarur_danider.pdfIn PDF document text
    • http://files.kristopherbenedict.com/uploads/1/3/2/8/132815807/mexifaxogiledudox.pdfIn PDF document text
    • http://files.alebml.com/uploads/1/3/0/7/130739239/3594939.pdfIn PDF document text
    • http://vafula.celebrationinmykitchen.com/uploads/1/3/1/4/131407408/takuvurerunasiwukiw.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/1/0430/7081/6407/files/74754210795.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7128/2079/files/justin_bieber_all_song_djjohal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/4656/2966/files/9763685862.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2476/9436/files/zenawizikakix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4339/6506/files/adjectives_suffixes_exercises.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6581/9814/files/wofikejadobalutitevaxew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4910/6080/files/cibil_report_toll_free_number.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/5237/1863/files/automatic_transfer_switch_using_arduino.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/71340125447.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8672/5799/files/geometric_and_technical_drawing.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5116/2517/files/are_strings_mutable_in_python.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5665/9621/files/rujonuniroxowonaretupip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0002/1667/files/giwutolifof.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_off00007b88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B88 5544 bytes
SHA-256: 52e0a2df9d9723dfa7b8d392d892cd09e9d41a5b5f8485cfc5b54a58148a4e9e
font_01_sfnt_off00008e61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E61 10272 bytes
SHA-256: a9648fc9be5a7d7880b3b89380c8ee845acba0188e6f711e78043c96e937ca65

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