Malicious PDF — malware analysis report

Static analysis result for SHA-256 3077036f2f30e06f…

MALICIOUS

PDF

245.1 KB Created: 2020-07-08 12:15:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-09-24
MD5: 523871303c882056587ecde75c3ab3ec SHA-1: 1be371d34192f1eb0f4093640ca1b7a222783647 SHA-256: 3077036f2f30e06f4e0b0fd568ffacb3ef5907665a650504e85d456328958c49
134 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing indicating a link to known malicious redirector infrastructure. The embedded URL, https://ttraff.cc/wb?keyword=joyo%20kanji%20list%20pdf, is likely used to obscure the final destination, which could be a phishing page or a malware download. The document body itself is heavily obfuscated and contains metadata related to its creation, but does not provide clear user-facing content. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • 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.
  • 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/wb?keyword=joyo%20kanji%20list%20pdf In PDF document text
    • http://files.thecuriouscatgiftshop.com/uploads/1/3/2/6/132681596/puwakir.pdfIn PDF document text
    • http://files.readytogofinetailoredsuits.com/uploads/1/3/1/3/131381722/panika.pdfIn PDF document text
    • http://files.niassestudios.com/uploads/1/3/0/8/130874318/b919e96e4ba.pdfIn PDF document text
    • http://files.southlandfamilyclub.com/uploads/1/3/1/3/131379371/e862cb.pdfIn PDF document text
    • http://files.ancientpromise.org/uploads/1/3/0/7/130739567/e3245.pdfIn PDF document text
    • http://files.gilliantorckler.com/uploads/1/3/0/8/130874629/gomenevidi-kinepowa-xasokipa-xupuzateseroji.pdfIn PDF document text
    • http://files.michaelsawczynec.com/uploads/1/3/2/6/132683088/81ad42d7cac2.pdfIn PDF document text
    • http://files.lkoc.org/uploads/1/3/1/3/131383497/bofepowoj.pdfIn PDF document text
    • http://files.crossfitremix.com/uploads/1/3/1/3/131379290/a822834d13ad55.pdfIn PDF document text
    • http://files.howweglow.com/uploads/1/3/1/0/131070523/wafurug_xuxovabejenoj_bovezolewek_birosa.pdfIn PDF document text
    • http://files.eastsidepearl.org/uploads/1/3/2/7/132740398/2014968.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://sopemivelazu.files.wordpress.com/2020/07/pofofumudazugokulamevugag.pdfIn PDF document text
    • https://foxiwip.files.wordpress.com/2020/07/10976955625.pdfIn PDF document text
    • https://wotidabupef.files.wordpress.com/2020/07/11073286993.pdfIn PDF document text
    • https://babesakaj.files.wordpress.com/2020/06/porotukosifudad.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 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off0001ed4e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x1ED4E 133752 bytes
SHA-256: 32d2bf6961f2ea6729750c1ef2a610902906c9a92f694e475dd2b7c4b92743d7
font_01_sfnt_off00037500.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x37500 4840 bytes
SHA-256: 9970aca76494248a770a2b50b92781c3f7492f4bf122bacbf5fec62958015741
font_02_sfnt_off0003858d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3858D 28528 bytes
SHA-256: f5dd78ef903350d577f9b5a8c09be307750b9d91ca0a256de26135ad26eecfb8

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