Malicious PDF — malware analysis report

Static analysis result for SHA-256 48f9485df6929607…

MALICIOUS

PDF

80.2 KB Created: 2021-03-17 03:37:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 06ad0b5e9a93f8e0a4e9f3f01be64a88 SHA-1: 2c2be91a86694c9b08aea26f1e93ff984c54ceaa SHA-256: 48f9485df69296071a2d2558f54bef45ba184a0fcf44f13b56390306a34e2a40
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to PDF files hosted on various platforms, suggesting a link farm designed to attract traffic. The presence of a URL related to 'iron man 2 apk download' indicates a lure for potentially unwanted or malicious software. ClamAV and ML classifiers also flagged this PDF as malicious, supporting the phishing and malicious content assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://resalured.ru/wix?keyword=iron+man+2+apk+download
    • https://zogininofifus.weebly.com/uploads/1/3/2/6/132695288/bisuref-wegabokeviwuge.pdf
    • https://cdn.sqhk.co/zetoreli/geL9ifk/real_madrid_football_jersey.pdf
    • https://cdn-cms.f-static.net/uploads/4421215/normal_5fdab7e8c4792.pdf
    • https://static.s123-cdn-static.com/uploads/4478137/normal_5ffda7133d633.pdf
    • https://cdn-cms.f-static.net/uploads/4418557/normal_602f137e1496d.pdf
    • https://cdn.sqhk.co/salefudodid/ggcZ7hg/zombie_origins_walkthrough.pdf
    • https://cdn.sqhk.co/mewoveri/97hzhan/xuzaneve.pdf
    • https://kojazuzok.weebly.com/uploads/1/3/1/4/131438397/tovapuridoz.pdf
    • https://wunogalabapa.weebly.com/uploads/1/3/4/6/134603674/mivifoti.pdf
    • http://vasakuso.sportsontheweb.net/what_is_the_meaning_of_knowledge_creation.pdf
    • https://cdn.sqhk.co/xupodafib/gigifhc/pocket_stables_apkhere.pdf
    • https://static.s123-cdn-static.com/uploads/4378599/normal_5fefd4394d449.pdf
    • http://powajaxib.medianewsonline.com/5191961260.pdf
    • https://befetoxakotupo.weebly.com/uploads/1/3/0/7/130738956/5562145.pdf
    • https://cdn.sqhk.co/juxerawabuf/5vjducb/sijukuseze.pdf
    • https://pikelevadesos.weebly.com/uploads/1/3/1/3/131384679/vekudipuxosuwaxun.pdf
    • https://cdn.sqhk.co/vekokizijam/ieibhjF/survival_rate_stage_3_breast_cancer_lymph_nodes.pdf
    • https://cdn-cms.f-static.net/uploads/4488329/normal_5fdc34485279b.pdf
    • https://cdn.sqhk.co/migazajigum/ghrjgjb/learn_spanish_beginner_to_advanced.pdf
    • https://cdn.sqhk.co/lozuzupadis/aJniaH5/sas_zombie_assault_3_mod_apk_unlimited_money.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://pusebirenox.myartsonline.com/wopizoruguwotil.pdf
    • https://73a1781f-5c9f-4c76-8a11-a8e8c44f336a.filesusr.com/ugd/d9f7b5_489ddc58b6f24da09e7d3cf9f179faeb.pdf?index=true
    • http://sipanokule.onlinewebshop.net/98677422669.pdf
    • https://68420551-d949-41c4-975b-2ae86aa6d062.filesusr.com/ugd/09c3c7_291668b098454c10992590df62e405ff.pdf?index=true
    • https://d75bbb92-b0e4-4b50-83e6-2443e695523b.filesusr.com/ugd/bc73b9_d5648f1a345340528faa1294fa2743ac.pdf?index=true
    • 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_off0000fa5e.bin
6cf7ae71c816b5facb73f173522f51a75e7d58ac8ad25b0f6faa325dd4275af5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFA5E 5152 bytes
font_01_sfnt_off00010bde.bin
2c7685dc69d55b3be3d3545829ab829175cbe47757e7f96258a5e6cf882d7353		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10BDE 11056 bytes

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