Malicious PDF — malware analysis report

Static analysis result for SHA-256 44cde390ff77e9f1…

MALICIOUS

PDF

116.1 KB Created: 2020-08-12 06:42:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: aabb751b6392cb23e17b5787a618730f SHA-1: cd0c051073a6d01039d0b56a1578c288feeb3a9f SHA-256: 44cde390ff77e9f1300d44023c8bcc667b1d00d50ad0272b099d9a9e5514d330
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it links to known malicious redirector infrastructure. Additionally, PDF_SEO_LINK_FARM suggests a large number of outbound links, likely for SEO manipulation or to obscure malicious destinations. The embedded URL https://ttraff.cc/pify?keyword=human+impact+on+the+environment+pdf is a clear indicator of a redirection attempt. The ML classifier also 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=human+impact+on+the+environment+pdf In PDF document text
    • http://files.usemillennium.com/uploads/1/3/2/6/132696117/b02fbaca053c8.pdfIn PDF document text
    • http://femafunox.scratchmom.com/uploads/1/3/0/9/130969306/19151.pdfIn PDF document text
    • http://files.premiertintpros.com/uploads/1/3/0/9/130969153/5535013.pdfIn PDF document text
    • http://files.elmschoolofrealestate.info/uploads/1/3/0/9/130969004/ratag.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/1/0437/5992/7448/files/fiterolilumorejujitepulet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7286/3904/files/rifts_world_books.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6381/3020/files/nivajatumiberumi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3861/3415/files/70503483607.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6462/2246/files/apex_locator_generations.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9055/8622/files/77810037291.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5386/6408/files/disentri_amebiasis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0139/6896/files/lepawezogupamadobi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5534/1977/files/nerubosamak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1103/0690/files/what_are_all_the_nba_teams.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9647/3749/files/bruner_theory.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_off00018cc8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18CC8 5204 bytes
SHA-256: 4e3496d27b0fd32a42bf5943fb0ed25ed21b79f558f4b5da2fc85c608910e667
font_01_sfnt_off00019e4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19E4F 10704 bytes
SHA-256: 5917b1b4c2d8fa3b5bebeec65e9d53f3057099dc19d2470d1d7a7749d1884c76

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