Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ab7dafe1fbab129…

MALICIOUS

PDF

197.6 KB Created: 2020-07-10 19:43:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 16fa17e1502daecef1728ea180867cc9 SHA-1: d420b74f7327e0858d7a2c290e85509d21d82091 SHA-256: 6ab7dafe1fbab1292c6bcffb0e86bcdd1b7800b9867d50e699031c67fcaced25
94 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is a strong indicator of malicious intent. The ML classifier also flagged this PDF with high confidence. The embedded content suggests a lure related to legal documents, likely to trick users into clicking the malicious link. No scripts were extracted, but the presence of a malicious redirector is sufficient to classify this as a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 3

  • 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.
  • 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=resumen%20derecho%20romano%20arguello%20pdf
    • http://files.bbluntsheabutter.shop/uploads/1/3/1/3/131383018/bajof.pdf
    • http://files.mrsjankowski.com/uploads/1/3/1/3/131382607/fufamujowupi_virizesidawuse_vozitofopikanep_gizijomid.pdf
    • http://files.jacksoncieslak.com/uploads/1/3/0/8/130874029/bagupexor-xexonekafeba-babirodibi.pdf
    • http://files.tonypalermolifecoach.com/uploads/1/3/1/4/131437740/eaf0f757.pdf
    • http://files.marriedmarks.com/uploads/1/3/2/8/132816158/wawezanuz-titun-resuta-ponupax.pdf
    • http://files.afmsupplements.com/uploads/1/3/2/3/132302815/972851.pdf
    • http://files.saintalphonsusschool.org/uploads/1/3/1/8/131857071/b41fba5.pdf
    • http://files.circusla.com/uploads/1/3/1/6/131607005/1517955.pdf
    • http://files.brattleboropolice.org/uploads/1/3/1/3/131384468/6110a75cd9394.pdf
    • http://files.silviaramalli.com/uploads/1/3/0/8/130874495/2a0be76a00cc9.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://defamufomowa.files.wordpress.com/2020/06/20103054714.pdf
    • https://bimirofi.files.wordpress.com/2020/06/baporexujatek.pdf
    • https://zozijonatoto.files.wordpress.com/2020/06/74058315629.pdf
    • https://weteritisomu.files.wordpress.com/2020/06/femusebetukixazifub.pdf
    • https://rezewer.files.wordpress.com/2020/07/99010532498.pdf
    • https://bikaluvamu.files.wordpress.com/2020/07/89173247480.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zinigezumapafukutogu.pdf
    • https://cdn.shopify.com/s/files/1/0429/5095/1066/files/3477655008.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/siwizobudavegi.pdf
    • https://cdn.shopify.com/s/files/1/0429/8542/2997/files/xusaf.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/76222514852.pdf
    • https://cdn.shopify.com/s/files/1/0430/4610/9345/files/26329011456.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002d380.bin
b647114a4acc7266084c6b11c6c230ed25e8bc7764e3e2d79caf2fcd3b8f09f2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D380 5332 bytes
font_01_sfnt_off0002e56b.bin
38820aa1ef90c0c3679900fa84cb9861e1f13d8ca4d918f5a34b54ab0bb5becc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2E56B 10340 bytes

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