Malicious PDF — malware analysis report

Static analysis result for SHA-256 88d750c60b419f9f…

MALICIOUS

PDF

40.9 KB Created: 2020-08-21 22:43:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4b6812983414b5b40ee36f517cdc9d75 SHA-1: 95a7255578e85fbd0703d2492c9ec73a3a394770 SHA-256: 88d750c60b419f9fbaaf83dbb2beb5a2db55da688deeb854e6adb12686f49dff
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains embedded links and document body text that point to a redirector URL, specifically advertising a 'bigo live hack apk 2018'. This redirector is known to lead to malicious infrastructure. The ML classifier also strongly indicated maliciousness. The presence of numerous links, many pointing to benign Shopify PDFs, suggests a link farm or SEO poisoning tactic to obscure the malicious redirector.

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=bigo+live+hack+apk+2018 In PDF document text
    • http://files.suitsswagger.com/uploads/1/3/1/4/131453124/tuwewinil_loxipesalexun_rupabujaveja.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/1/0432/1378/3203/files/2614689655.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9364/6753/files/51886155364.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4874/7676/files/49653449311.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0757/3149/files/soxesubadabezimokezeneb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7665/7057/files/bunowasipat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/3272/6952/files/personal_statement_template_doc.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8156/3286/files/a_thousand_years_sheet_music_piano_guys.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3127/3365/files/nobuzufisibilejadovasa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9820/9446/files/complex_buying_behavior.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6499/9590/files/42847204293.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6405/7238/files/varen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6995/4453/files/tebesekeparotobuv.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_off00006173.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6173 5616 bytes
SHA-256: 6edf39a9d438c4517e7c9f06643721d9846d8a4c8409261990ba1273395c4f0f
font_01_sfnt_off0000749e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x749E 10064 bytes
SHA-256: 49aeb914b166b5e2d86fb677ab8961a54440c3ac2bd68ab228d4b30a30db8f83

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