Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c90ac251c4cd63a…

MALICIOUS

PDF

80.6 KB Created: 2020-09-12 09:55:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 007a746846538199d3809433fab9eeec SHA-1: 6d85f9058cb2ed775e513fee100d73354b9f51ed SHA-256: 0c90ac251c4cd63a78d30c86160f474b566a4e646e4c4eec936591bf7c9da15a
154 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, masquerading as search results for "Urdu idioms with urdu meanings and sentences pdf". The primary link directs to a known malicious redirector infrastructure. This suggests the document is part of a link farm or SEO poisoning campaign designed to drive traffic to malicious sites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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.
  • 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.
  • 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.ru/wb?keyword=urdu%20idioms%20with%20urdu%20meanings%20and%20sentences%20pdf
    • http://zugogi.kashmirconnected.com/uploads/1/3/1/0/131070340/7015977.pdf
    • http://files.productionriggingdepartment.com/uploads/1/3/0/9/130969148/2837425.pdf
    • http://files.narnargoonfc.com/uploads/1/3/1/4/131452778/4ce693.pdf
    • http://files.fbcpottstown.org/uploads/1/3/0/9/130969907/wavazawuwox_dufugopo_bafodudip_kawafavuwal.pdf
    • http://files.reikifortheplanet.com/uploads/1/3/2/3/132302815/5645773.pdf
    • http://files.kylavender.com/uploads/1/3/2/7/132710676/1558531.pdf
    • http://files.theperfectrockingchair.com/uploads/1/3/2/7/132740692/zogexekojamunapu.pdf
    • http://files.vega-2.com/uploads/1/3/1/8/131871690/givasenodezifoduna.pdf
    • http://wemubofav.courageousgirls.com/uploads/1/3/0/7/130739826/4704727.pdf
    • http://lapome.starlitedance.ca/uploads/1/3/2/7/132710507/tojagiwelobu.pdf
    • http://files.neusgilcortes.com/uploads/1/3/2/6/132696465/1411891.pdf
    • http://xuvopifa.thehockeyprofessor.org/uploads/1/3/0/8/130874426/lijulamuzo_dakow.pdf
    • http://paporuw.exoticedventures.com/uploads/1/3/1/4/131406453/4974283.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/9440/0414/files/makalah_arbitrase.pdf
    • https://cdn.shopify.com/s/files/1/0461/4186/6137/files/39102022996.pdf
    • https://cdn.shopify.com/s/files/1/0430/0960/5791/files/comparing_and_ordering_fractions_wor.pdf
    • https://cdn.shopify.com/s/files/1/0461/1692/9700/files/63892424322.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/
    • https://savannah.gnu.org/projects/freefont/
    • http://www.gnu.org/licenses/
    • http://www.gnu.org/copyleft/gpl.html
    • http://scripts.sil.org/OFL
    • http://www.gnu.org/licenses/lgpl.htmlRegularDanhHong
    • http://www.geocities.com/dnhhng

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b282.bin
d767af0f446b6b41f5dc97ec9f7b095ff135a3a5c6fa24faa084a79ed271df5b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB282 12808 bytes
font_01_sfnt_off0000d4a1.bin
5e02df7ccac08d87c6208dc272bd7aed8b46bb27925a7c76035d4c0014f2d692		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD4A1 5876 bytes
font_02_sfnt_off0000e8d0.bin
54d5ccd4c8c9df428bc5af6b83c8214d4d56f64bead6e8e32642264bd630c6b0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE8D0 5620 bytes
font_03_sfnt_off0000fbdb.bin
99c5048a2a870613ea12f15f28166bed054905ed2bff6f8759755f1ec2129ea8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFBDB 5276 bytes
font_04_sfnt_off00010c31.bin
2588e1bf41116eff04e93efc0c4193e9247b781261b539cf278a5bf4b5e96645		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10C31 11568 bytes

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