Malicious PDF — malware analysis report

Static analysis result for SHA-256 620197ae1ffd0c93…

MALICIOUS

PDF

54.0 KB Created: 2020-08-16 21:17:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4734f5f7f535e1bfdcb70a725f7c0423 SHA-1: 7c4d21d4296b9036c4bb2cee6a9acc80a836204d SHA-256: 620197ae1ffd0c937b521b0469bc8637888efb6367459ea79211cb5778855fa3
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, indicating an attempt to lead the user to malicious content. The document also includes a large number of links to external PDFs hosted on Shopify, suggesting a link farm or SEO manipulation tactic. The ML classifier strongly flagged this PDF as malicious.

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=soundhound+app+free In PDF document text
    • http://files.foxoildrilling.com/uploads/1/3/2/7/132740291/6966785.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/1/0433/5747/0870/files/implementing_safety_management_systems_in_aviation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6728/5408/files/88675569999.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7354/4093/files/80284728157.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7725/4814/files/66198307586.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4818/9603/files/social_psychology_aronson_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5732/2903/files/lopekokola.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2439/2087/files/niwoxipo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7121/8588/files/59306004997.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3512/2081/files/xegiziwirijunagomejolu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8717/5588/files/befovapegamebawisibuxux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7932/0223/files/42425594746.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9412/1379/files/serativozulizukobivop.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
🗂 Part of campaign: monasfamilyemporium.com 7 samples

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_off00007a23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A23 5024 bytes
SHA-256: 812b9fae418c2243ab20d432f9323568b70f9d13579bcfec0ff98ed4168ddaac
font_01_sfnt_off00008b2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B2D 13260 bytes
SHA-256: e892a3baac93425937e183f4fd4ee760835f7354a997d6409d7a6cd626c9e2e2
font_02_sfnt_off0000b5da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB5DA 16268 bytes
SHA-256: 22fb568feb197e6acf9200b23e73596f8f15260301962c37d3b57e6b3300ba63

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