Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b6632d22ef4a32a…

MALICIOUS

PDF

50.9 KB Created: 2020-08-11 01:50:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b984d450b93d84387bbd50de2fda5c05 SHA-1: 6d12588cc7c813068bd09a2a800f7b03edf2bb67 SHA-256: 6b6632d22ef4a32ab3582f526b78f4280b3193220b387f212ef9c3ac8dfcac5c
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links pointing to redirector infrastructure, specifically `https://ttraff.cc/pify?keyword=contracci%25C3%25B3n+isotonica+pdf`. This indicates a phishing or malware distribution attempt, leveraging a link farm to obscure the final destination. The ML classifier strongly supports the malicious nature of this PDF.

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=contracci%25C3%25B3n+isotonica+pdf In PDF document text
    • http://files.chesapeakemobile.com/uploads/1/3/1/0/131071056/zutudagup.pdfIn PDF document text
    • http://telijuzo.trebamstyle.com/uploads/1/3/1/3/131380429/436b34275.pdfIn PDF document text
    • http://files.beardedhero.org/uploads/1/3/0/8/130814682/853253bf2a6.pdfIn PDF document text
    • http://files.cavaliercrazyrescue.org/uploads/1/3/1/6/131606819/xutixaro.pdfIn PDF document text
    • http://files.commongroundforafrica.org/uploads/1/3/2/6/132681476/nasadosune.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/1/0432/8354/6267/files/93099159184.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5830/8006/files/muvonejudotovij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5369/4626/files/kekisilidilon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8383/3249/files/95222901071.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2608/7064/files/68962038752.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8477/5578/files/89084718078.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3229/6089/files/baldor_motor_catalog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1139/8039/files/46581691549.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5103/1447/files/31638479557.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 4

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_off000086bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86BF 5156 bytes
SHA-256: 51f06dbeba4abcbd7caad8d4eeeb9826a478f74c42e1b619d31c83093a6086ae
font_01_sfnt_off00009814.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9814 11220 bytes
SHA-256: b36e92549f6eb65f3c1c63b98e835e1bdec5f763f444699bbee29c1137d31499

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