Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ac954bf9326ad35…

MALICIOUS

PDF

46.1 KB Created: 2020-07-27 11:59:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: eb06fba1be91758ef5edfb2fe0c9b5e5 SHA-1: b2b44f59180db642888a82386eb653c352c5d65f SHA-256: 5ac954bf9326ad357e78d5ed2b99c37b998aa4d6e4337d1ce37116a953f822eb
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, many pointing to redirector infrastructure, suggesting a phishing or malware distribution campaign. The primary redirector URL is associated with known malicious activity. The document body, though heavily obfuscated, appears to reference 'Brawl Stars' to lure users. The presence of embedded URLs and the ML classifier's high confidence score indicate malicious intent.

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.ru/pify?keyword=brawl+stars+ios+android+crossplay In PDF document text
    • http://files.bellaalaf.com/uploads/1/3/2/6/132683484/pidonupod.pdfIn PDF document text
    • http://files.drjohnnylee.com/uploads/1/3/2/8/132814589/vimor.pdfIn PDF document text
    • http://files.support.easy-editor.com/uploads/1/3/1/4/131453725/2bf38a13f4.pdfIn PDF document text
    • http://files.cottonmouth-records.com/uploads/1/3/1/4/131453402/6630705.pdfIn PDF document text
    • http://files.rachelyuengaetz.com/uploads/1/3/1/4/131406717/4186768.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/1/0429/5580/0739/files/lojupipesojomowegixonejap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5868/3294/files/zobew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9675/0742/files/98280212753.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0888/3870/files/fomokeletilonuxavetidokun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7290/3585/files/ziwoxilapogidotofobaseji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6915/3181/files/11694363717.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3733/3406/files/kobuzukezasidadonokal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/87745409623.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4932/0610/files/zosux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3041/2437/files/74716258921.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5787/2033/files/75956752904.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0485/3402/files/mavejipedekitivexuraxunar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/45865267400.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_off000077b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77B9 4980 bytes
SHA-256: 561e142a2fa767e2cd2d417991782471805ba595170b78b781e14fd91c610c00
font_01_sfnt_off000088bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88BB 9960 bytes
SHA-256: 9be75a6d7b7c5371e5ac063dc45272ad8dd603d8d79a1c8bd935015be524529a

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