Malicious PDF — malware analysis report

Static analysis result for SHA-256 82dbba2866f66187…

MALICIOUS

PDF

41.8 KB Created: 2020-08-08 07:33:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9df05a940d34b1922c2a4971dd49777d SHA-1: 657eca6fdf27c330c98fb09e13a2830386063f4e SHA-256: 82dbba2866f661877fb8bbd533ea22d8d29e94c44804cb6003abec8408414ca8
234 Risk Score

Malware Insights

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

The PDF contains numerous links to redirector infrastructure, specifically `https://ttraff.com/pify?keyword=ensayo+de+alimentos+transgenicos+pdf`, which is flagged as malicious. The document also exhibits characteristics of a password-protected archive lure, suggesting it's designed to trick users into downloading a password-protected payload. The presence of embedded URLs and the ML classifier's high confidence score further support a malicious classification.

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.
  • 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.com/pify?keyword=ensayo+de+alimentos+transgenicos+pdf In PDF document text
    • http://files.surplus-lighting.com/uploads/1/3/1/4/131453657/6dcfb53.pdfIn PDF document text
    • http://files.oogeu.com/uploads/1/3/1/1/131164250/9350808.pdfIn PDF document text
    • http://files.natashasteer.com/uploads/1/3/1/4/131437953/6248808.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/1/0436/6719/4021/files/48180968647.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/11411440246.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6673/7311/files/zisebadebe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6142/7867/files/30540481048.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9232/8104/files/8321013720.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2363/8426/files/xojiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2175/3758/files/34270466903.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4151/2855/files/libexofumikapukasamu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1708/4839/files/1012066414.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kupenase.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4809/8209/files/wilhelm_scream_mp3.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 7

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_off0000617d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x617D 5532 bytes
SHA-256: b91195db6e227139ba87648ea0c45ad4d624ab3514db9f7a419aea786ad237d8
font_01_sfnt_off0000744d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x744D 11172 bytes
SHA-256: 2a5812c0d017320cbc12b0175ca4ef86f79541e035951e6cb3b0e7a636fc927f

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