Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d3da10d8523f7d1…

MALICIOUS

PDF

203.0 KB Created: 2020-08-09 17:01:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e8a5a2081c682c65f15a898dc9fdeab2 SHA-1: fe24873f8fbd8cb535650bb02eb8b34f95732fea SHA-256: 6d3da10d8523f7d1a4c12a4356782b2c5ec4723f8427c5bab1210e92a095be98
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 highly indicative of malicious intent. The embedded URL is designed to redirect the user to a potentially harmful site, likely for phishing or malware delivery. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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/pify?keyword=yuddha+kanda+ramayana+pdf
    • http://files.clarachanmusic.com/uploads/1/3/1/4/131408103/wamefopo.pdf
    • http://files.yanka-online.com/uploads/1/3/2/6/132681826/sikale_vezeruxi.pdf
    • http://files.etobelarusdetka.com/uploads/1/3/0/7/130776381/4597207.pdf
    • http://files.ndsubisonrobotics.org/uploads/1/3/1/8/131857213/nikajizuvituder-kawojuwipudane.pdf
    • http://files.arcoftheancients.com/uploads/1/3/0/7/130738622/fivujesukafokejifug.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0436/2626/6782/files/cable_tray_installation.pdf
    • https://cdn.shopify.com/s/files/1/0435/8320/9631/files/najowokugenimizevififaju.pdf
    • https://cdn.shopify.com/s/files/1/0431/2013/2247/files/business_plan_for_restaurants.pdf
    • https://cdn.shopify.com/s/files/1/0430/5181/0969/files/72428423632.pdf
    • https://cdn.shopify.com/s/files/1/0438/6865/1680/files/kegixadotokamekasel.pdf
    • https://cdn.shopify.com/s/files/1/0431/8609/4229/files/fajuw.pdf
    • https://cdn.shopify.com/s/files/1/0433/0517/3147/files/google_sheets_string_concat.pdf
    • https://cdn.shopify.com/s/files/1/0440/7066/6390/files/rovelosofadadovod.pdf
    • https://cdn.shopify.com/s/files/1/0428/3518/1734/files/35983873099.pdf
    • https://cdn.shopify.com/s/files/1/0430/6799/8362/files/zorubavajorunafodusan.pdf
    • https://cdn.shopify.com/s/files/1/0430/6596/6754/files/46739054573.pdf
    • https://cdn.shopify.com/s/files/1/0430/4021/1105/files/11366817007.pdf
    • https://cdn.shopify.com/s/files/1/0429/4115/3439/files/dorudubogonifoladilila.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_off0002ea76.bin
b1b5e15944903761a10146740f6ea3028dfb6b28688f109faf0295fd8b5ed67b
pdf-font-stream PDF embedded font (sfnt) at offset 0x2EA76 5196 bytes
font_01_sfnt_off0002fc03.bin
87ee052ebccf0a1c0de258cb8f1f8ffc7824cc27a988fd3f83f606e31bce000a
pdf-font-stream PDF embedded font (sfnt) at offset 0x2FC03 9980 bytes