Malicious PDF — malware analysis report

Static analysis result for SHA-256 bbb95a468230da74…

MALICIOUS

PDF

47.4 KB Created: 2020-08-06 05:21:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7ea8663dd772e101a81eefcab3a10efd SHA-1: 458f2bfbe08b51f5ad78fed5bc01cf37f62380ae SHA-256: bbb95a468230da7409f7911c7b0b704d2fbbdc5bb826eeacc1d24e95fdeba4dd
194 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains a URL that appears to be a lure for 'Google academico brasil pdf'. This URL, https://ttraff.cc/pify?keyword=google+academico+brasil+pdf, redirects to a malicious domain, indicating a phishing or redirection attempt. The presence of a link farm further supports the 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.cc/pify?keyword=google+academico+brasil+pdf In PDF document text
    • http://files.aninvisiblethreadnovel.com/uploads/1/3/1/4/131437984/budalupokibedob.pdfIn PDF document text
    • http://files.valsbrewtreats.com/uploads/1/3/2/7/132740275/6d57a.pdfIn PDF document text
    • http://files.mtairyvillage.com/uploads/1/3/0/8/130814411/54e94.pdfIn PDF document text
    • http://files.vi-vi.org/uploads/1/3/1/4/131408103/funogijesetili_xijaru_pekufokupudos_vuxowo.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/1/0438/1740/2530/files/97012910281.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8550/3393/files/beethoven_ode_to_joy_piano_sheet_music.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3853/8904/files/nusarawobikojejumaxu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0583/6444/files/43808475153.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7346/0641/files/10477977011.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5430/0312/files/39985569595.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8970/5625/files/genevejukuraxipotuzi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0070/9791/files/87758115086.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9635/9580/files/8243770942.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3756/2779/files/mac_key_code.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7712/2713/files/64578574326.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3394/2423/files/32844241812.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6888/3098/files/92190664750.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 6

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_off000079e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79E1 5644 bytes
SHA-256: 41dc8f8f2f4b7a1d6b947f1d6e76801e1a6ffbb1fd1d6e06ea0a02a2c5579551
font_01_sfnt_off00008cfb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CFB 10524 bytes
SHA-256: ec4a4a45d7e5b4234eebfd5625b3967fab9d88d04e5c438127bb980f43ecb014

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