Malicious PDF — malware analysis report

Static analysis result for SHA-256 dde5b90d63e7f81c…

MALICIOUS

PDF

39.8 KB Created: 2020-08-08 20:26:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7ef56503caa575d184a6c25f1c4f58fa SHA-1: 2af3494cb7eebc94c906833dbba7e1cef680e7fc SHA-256: dde5b90d63e7f81c20eb67506b516c78cf18b6725fe62e84a97f59dc803c7490
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector at 'https://ttraff.com/wb?keyword=combine%20multiple%20pdfs%20into%20one%20file%20without%20adobe%20acrobat'. This suggests a social engineering attack aiming to trick users into downloading further malware or visiting malicious sites. The document body, though partially corrupted, also contains this URL, reinforcing the lure. The presence of many other PDF links, some benign and some unknown, indicates a link farm strategy to obscure the malicious destination.

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/wb?keyword=combine%20multiple%20pdfs%20into%20one%20file%20without%20adobe%20acrobat In PDF document text
    • http://files.edgrasso.com/uploads/1/3/0/8/130874030/vajekerogunepifopaw.pdfIn PDF document text
    • http://files.plumasfirechiefs.org/uploads/1/3/2/7/132712050/53237f27.pdfIn PDF document text
    • http://files.manekrush.org/uploads/1/3/1/4/131437037/abba3.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/1/0432/1627/3563/files/angielski_w_tumaczeniach_sownictwo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0118/3397/files/19809862168.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8714/3839/files/past_tense_worksheets_for_grade_3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6530/3455/files/50514410287.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9429/4171/files/gekikanixonasamifemulu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7731/2411/files/jujesizat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4291/3955/files/nixajajela.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7157/8007/files/3719228902.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6229/5714/files/1439529771.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7519/0430/files/24644694220.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8812/4829/files/mamaguzibap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2077/8653/files/68137099644.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2534/9283/files/73713447288.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 5

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_off00005b3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B3D 5532 bytes
SHA-256: 9e7529e3fd37d3efaa1e9c27d7b69d3c326a8ea9bf6238c72d725013b6bac4c4
font_01_sfnt_off00006dec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DEC 10756 bytes
SHA-256: 7c2b5977238db65afb5d1958bdf13353bab3c702792de58c03f85611184f9e03

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