Malicious PDF — malware analysis report

Static analysis result for SHA-256 3feda02fc799165c…

MALICIOUS

PDF

49.9 KB Created: 2020-08-24 17:44:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1a68409143ea311a6e77d1bc0222ed20 SHA-1: f73397efeb1b846572ae3623666f41944d36b5df SHA-256: 3feda02fc799165c9769793362c2207eb5285c2dfc324c52dd5ae0f2f4cc9776
194 Risk Score

Malware Insights

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

The PDF contains a prominent link to a redirector service, which is further disguised by the document body text referencing a "Charades app premium apk". The ML classifier strongly indicated maliciousness, and the PDF was flagged for containing a large number of external links, many hosted on Shopify. The primary malicious IOC is the redirector URL, which likely leads to a malicious payload or phishing page.

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=charades+app+que+soy+yo+premium+apk In PDF document text
    • http://bowademi.jasontfisher.com/uploads/1/3/2/7/132740435/rekelejosodop.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/1/0439/0453/2648/files/fisalogupipaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1087/4777/files/android_google_account_verification_bypass.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5466/0758/files/12138377435.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0459/8949/4951/files/gta_v_apk_mediafre_android_descargar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9928/3861/files/14934748388.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2504/6431/files/phylum_chordata_classification.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0425/4615/files/70353644495.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6728/5408/files/fofuvawosa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8974/0441/files/tri-_fold_pamphlet_template_microsoft_word.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005c7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C7B 5364 bytes
SHA-256: cf8141ae968a71cef071b427b215ffcdab602e1c9dfc1b2c72eab2a19c40096f
font_01_sfnt_off00006e94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E94 5432 bytes
SHA-256: 870555f44e54244c153a2b19d369509b543592adab9a635b8f4e7334263ea5bd
font_02_sfnt_off0000815d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x815D 10120 bytes
SHA-256: 8a3b4e7f4418505b054342c105220b21813f1da0d203b2c8393bb387dbce069e
font_03_sfnt_off0000a438.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA438 16544 bytes
SHA-256: 8d45f5f417e74c11d54eaee7138901bb4b2498e40dea16ccf89f2c2707c13e35

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