Malicious PDF — malware analysis report

Static analysis result for SHA-256 779e8ee1aa78106c…

MALICIOUS

PDF

43.3 KB Created: 2020-08-23 13:28:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2f4e7c64fec43842108cbb9e72cb0ec5 SHA-1: a7bad484a5435c61cd2ca52b91dd39be3d280315 SHA-256: 779e8ee1aa78106c8b8dc0ce8a4b3c3b310f645103942c5d64c28788ae32d31f
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to an SEO redirector service. The primary redirector URL, 'https://ttraff.com/pify?keyword=citra+3ds+free++for+android', is associated with malicious activity and appears to be part of a phishing or scam campaign. The document body, though heavily obfuscated, contains this URL, suggesting an attempt to trick users into downloading potentially malicious content.

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=citra+3ds+free++for+android In PDF document text
    • http://files.entrepreneur-srilanka.com/uploads/1/3/0/8/130874284/zizabujivu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5022/8119/files/82227447189.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3459/1907/files/bodenekuvexa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/duwaxufezemurogagur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0818/6792/files/easy_alto_sax_sheet_music.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9353/2573/files/runanozeposorawebu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5823/2473/files/42794602292.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/8034/7801/files/arbitrage_trading_strategy.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/matam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0086/3640/files/conduction_of_heat_in_solids_carslaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5738/9472/files/11316533295.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2166/2365/files/north_ayrshire_school_holidays_2020.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 4

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005f70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F70 4844 bytes
SHA-256: 08fd6dbff46b7c84814c3ee4b4c1abcb3cec4ca38a482452db49fb25ba7ddc14
font_01_sfnt_off00006fec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FEC 10156 bytes
SHA-256: 3e3ff155b1b5a63eedb698c3f762d58563235fd572cc1a0bfd76a253987fbe72
font_02_sfnt_off0000929f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x929F 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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