Malicious PDF — malware analysis report

Static analysis result for SHA-256 87e19c882077cb19…

MALICIOUS

PDF

40.7 KB Created: 2020-08-23 02:05:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0b7d0f3d5789e81562d84a9ceb0bc8a3 SHA-1: ce16edccb41c7e6af855dd2e02085500285de12c SHA-256: 87e19c882077cb191101693d4211e6522ca8a6ba34919a297b1981ebcdae3c24
202 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating malicious intent, including links to known redirector infrastructure and a large number of external PDF links, suggesting a link farm for SEO phishing. The document body itself contains a lure related to 'aws s3 select performance' and a call-to-action button, further supporting a phishing or scam attempt. The primary malicious IOC is the redirector URL, which likely leads to the final payload.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=aws+s3+select+performance In PDF document text
    • http://jijot.kparkerdesign.net/uploads/1/3/1/4/131437092/0cf6dc1478e63.pdfIn PDF document text
    • http://files.dbedwardsjr.com/uploads/1/3/1/3/131380107/cea6c828e82662.pdfIn PDF document text
    • http://zutejuti.theridingtherapycenter.org/uploads/1/3/0/9/130969280/719d00f.pdfIn PDF document text
    • http://files.merrillicedrags.com/uploads/1/3/0/7/130775398/2167697.pdfIn PDF document text
    • http://files.regalbakeryusa.com/uploads/1/3/0/9/130969885/roxasivoro_devipizojopuxem_xabobazemidig.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/1/0430/5115/5618/files/68533747400.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8946/8328/files/73843052411.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8933/8276/files/7105546112.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4705/1686/files/dabutogewoxeletedazuva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8804/4442/files/nopefemadofu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0460/0555/1271/files/capitalization_worksheets_free_printable.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9746/4731/files/zelimitajefu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1712/6563/files/18252376821.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3810/5000/files/how_to_merge_on_mac.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 8

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_off00006163.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6163 5408 bytes
SHA-256: 92e8203afacd39bdaf9c950b654b67f141a18c7adea74b1c0d30b1cbfb6e5447
font_01_sfnt_off000073ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73BA 10128 bytes
SHA-256: 4a2884cac88a3a5447ee6d9ba7050158acd8d4a4e6926bd237acc8596f6abe40

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