Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d7869f81081c30c…

MALICIOUS

PDF

45.3 KB Created: 2020-08-10 18:54:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4955d15138eb902b4fcb02f83c90ad32 SHA-1: 9cff53ba6a0a842eff67e700ed6fa514be974a98 SHA-256: 7d7869f81081c30cf9851b6c3dbc466e0be76b6d95f2d760974e5e40f0dff614
274 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains numerous links to an SEO redirector, likely to disguise malicious downloads, and includes instructions to disable security software. The document body, though heavily obfuscated, contains references to 'Abbyy pdf transformer 14' and URLs that appear to be part of a link farm designed to attract users searching for software. The presence of embedded links and the instruction to disable security software strongly suggest a malicious intent to trick users into downloading and executing a payload.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 7

  • 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.
  • Security software disable instruction high SE_SECURITY_BYPASS
    Document instructs the user to disable antivirus or security software — unusual for ordinary documents and high-risk in an unsolicited file
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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=abbyy+pdf+transformer+14 In PDF document text
    • http://files.andersoncommercialrealestate.com/uploads/1/3/1/1/131164520/4314738.pdfIn PDF document text
    • http://files.angelsof97.com/uploads/1/3/1/8/131857152/7b3a67f8.pdfIn PDF document text
    • http://sipogeta.independentdrcme.net/uploads/1/3/1/1/131163658/getivosu-wuvosepakamaxo-bonenuz.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/1/0436/0483/6515/files/libro_agorafobia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4190/7100/files/zujuzaremimipigafibodup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/3831/9527/files/44578223954.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2235/8427/files/fedawo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3365/7507/files/46869445054.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5511/8501/files/nabamabu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1070/3010/files/7291765107.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0156/0737/files/walupomozimorizazutomar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7079/9510/files/pikozowizazoxaxenivuvusej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9506/4730/files/cardiomyopathy_classification.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3531/9702/files/duchess_of_malfi_modern_english_translation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6572/9429/files/fesivifuwepet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1011/3188/files/68445351039.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006ed5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6ED5 5524 bytes
SHA-256: 3c2d5da173806a994a1e7a49350a03a3ea30b922d5b35561f2542979dbef62bd
font_01_sfnt_off0000818c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x818C 12688 bytes
SHA-256: 35d56f4aa5c44f74be379c877b2ae584b8a6e8c8a4638edf37dea46975302c34