Malicious PDF — malware analysis report

Static analysis result for SHA-256 76bb839b21849793…

MALICIOUS

PDF

43.0 KB Created: 2020-08-21 07:50:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1f2f8e8d0f234975e0c8ccffd6d9b165 SHA-1: 57f7349e574c0697026f59d6be7747c324c1f3de SHA-256: 76bb839b21849793a13fce4ca6eeb186c42ff8dd85f4c31fece8ef3794593bbc
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to a redirector infrastructure associated with malicious activity. The document body and embedded links suggest a lure related to job training or salary information, likely intended to trick users into visiting malicious sites. The presence of a large number of external PDF links also indicates a link farm, a common tactic for SEO poisoning and distributing malicious content.

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.com/pify?keyword=agent+immobilier+formation+salaire In PDF document text
    • http://files.housespechomeinspections.com/uploads/1/3/2/6/132681322/5113793.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/1/0430/8346/4855/files/zopivigefupemo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1381/5966/files/7584036285.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1804/4063/files/babomivuniwi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/1500/1496/files/21156284906.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4444/5092/files/psychology_hockenbury_6th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0314/9462/files/kujonejisejesedunufusez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7157/0069/files/25169426619.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2222/9397/files/54784773083.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7237/3411/files/toviluwonezi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5381/8790/files/pdf_to_word_converter_online_through_mail.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1046/3643/files/26042971197.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9141/7505/files/gauge_theory_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3087/9136/files/32748711765.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9693/2505/files/99604263323.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 3

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_off000069c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69C5 5216 bytes
SHA-256: 022919066915883770aded29264e26e965d95ee9ad8d8fdb1e75940b95506785
font_01_sfnt_off00007b6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B6B 10460 bytes
SHA-256: 8c3686327bb11f3c77e8dcd804d005906b4848d3fb688e33be3f8fbaa1cdc3f0

Open this report in the interactive analyzer, or submit your own file for analysis.